TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A

TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

D High-Performance Static CMOS Technology D External Memory Interface (LF2407A)

− 25-ns Instruction Cycle Time (40 MHz) − 192K Words x 16 Bits of Total Memory:
− 40-MIPS Performance 64K Program, 64K Data, 64K I/O
− Low-Power 3.3-V Design D Watchdog (WD) Timer Module
D Based on TMS320C2xx DSP CPU Core D 10-Bit Analog-to-Digital Converter (ADC)
− Code-Compatible With F243/F241/C242 − 8 or 16 Multiplexed Input Channels
− Instruction Set and Module Compatible − 500-ns MIN Conversion Time
With F240 − Selectable Twin 8-State Sequencers
D Flash (LF) and ROM (LC) Device Options Triggered by Two Event Managers
− LF240xA: LF2407A, LF2406A, D Controller Area Network (CAN) 2.0B Module
LF2403A, LF2402A (LF2407A, 2406A, 2403A)
− LC240xA: LC2406A, LC2404A,
LC2403A, LC2402A D Serial Communications Interface (SCI)
D On-Chip Memory D 16-Bit Serial Peripheral Interface (SPI)
− Up to 32K Words x 16 Bits of Flash (LF2407A, 2406A, LC2404A, 2403A)
EEPROM (4 Sectors) or ROM D Phase-Locked-Loop (PLL)-Based Clock
− Programmable “Code-Security” Feature Generation
for the On-Chip Flash/ROM D Up to 40 Individually Programmable,
− Up to 2.5K Words x 16 Bits of Multiplexed General-Purpose Input / Output
Data/Program RAM (GPIO) Pins
− 544 Words of Dual-Access RAM
D Up to Five External Interrupts (Power Drive
− Up to 2K Words of Single-Access RAM
Protection, Reset, Two Maskable Interrupts)
D Boot ROM (LF240xA Devices)
D Power Management:
− SCI/SPI Bootloader
− Three Power-Down Modes
D Up to Two Event-Manager (EV) Modules − Ability to Power Down Each Peripheral
(EVA and EVB), Each Includes: Independently
− Two 16-Bit General-Purpose Timers
− Eight 16-Bit Pulse-Width Modulation
D Real-Time JTAG-Compliant Scan-Based
Emulation, IEEE Standard 1149.1† (JTAG)
(PWM) Channels Which Enable:
− Three-Phase Inverter Control D Development Tools Include:
− Center- or Edge-Alignment of PWM − Texas Instruments (TI) ANSI C Compiler,
Channels Assembler/ Linker, and Code Composer
− Emergency PWM Channel Shutdown Studio Debugger
With External PDPINTx Pin − Evaluation Modules
− Programmable Deadband (Deadtime) − Scan-Based Self-Emulation (XDS510)
Prevents Shoot-Through Faults − Broad Third-Party Digital Motor Control
− Three Capture Units for Time-Stamping Support
of External Events D Package Options
− Input Qualifier for Select Pins − 144-Pin LQFP PGE (LF2407A)
− On-Chip Position Encoder Interface − 100-Pin LQFP PZ (2406A, LC2404A)
Circuitry − 64-Pin TQFP PAG (LF2403A, LC2403A,
− Synchronized A-to-D Conversion LC2402A)
− Designed for AC Induction, BLDC, − 64-Pin QFP PG (2402A)
Switched Reluctance, and Stepper Motor D Extended Temperature Options (A and S)
Control − A: − 40°C to 85°C
− Applicable for Multiple Motor and/or − S: − 40°C to 125°C
Converter Control
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Code Composer Studio and XDS510 are trademarks of Texas Instruments.

Other trademarks are the property of their respective owners.
† IEEE Standard 1149.1−1990, IEEE Standard Test-Access Port; however, boundary scan is not supported in this device family.

PRODUCTION DATA information is current as of publication date. Copyright  2005, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 1

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

Table of Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Controller Area Network (CAN) Module . . . . . . . . . . 51

TMS320x240xA Device Summary . . . . . . . . . . . . . . . . . 5 Serial Peripheral Interface (SPI) Module . . . . . . . . . . 55
Functional Block Diagram of the 2407A PLL-Based Clock Module . . . . . . . . . . . . . . . . . . . . . . 57
DSP Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Digital I/O and Shared Pin Functions . . . . . . . . . . . . . 60
Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 External Memory Interface (LF2407A) . . . . . . . . . . . . 64
Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Watchdog (WD) Timer Module . . . . . . . . . . . . . . . . . . 65
Memory Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Development Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Peripheral Memory Map of the 2407A/2406A . . . . . . . 29 Documentation Support . . . . . . . . . . . . . . . . . . . . . . . . . 70
Device Reset and Interrupts . . . . . . . . . . . . . . . . . . . . . 30 LF240xA and LC240xA Electrical
DSP CPU Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Specifications Data . . . . . . . . . . . . . . . . . . . . . . . . . 71
TMS320x240xA Instruction Set . . . . . . . . . . . . . . . . . . . 34 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . 71
Scan-Based Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Recommended Operating Conditions . . . . . . . . . . . . . 71
Functional Block Diagram of the 2407A DSP CPU . . 35 Migrating From LF240xA (Flash) Devices to
Internal Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 LC240xA (ROM) Devices . . . . . . . . . . . . . . . . . . . 110
Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Migrating From 240x Devices to 240xA Devices . . . 111
Event Manager Modules (EVA, EVB) . . . . . . . . . . . . 45 Migrating From LF240x Devices to
Enhanced Analog-to-Digital Converter LC240xA Devices . . . . . . . . . . . . . . . . . . . . . . . . . 112
(ADC) Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Peripheral Register Description . . . . . . . . . . . . . . . . . . 113
Serial Communications Interface (SCI) Module . . . . 53 Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

REVISION HISTORY

PAGE HIGHLIGHTS

11 Added the VCCA pin to final note on Table 2

27 Modified LC2403A memory map (Figure 7) in location 8200

50 Added a sentence to the paragraph following Figure 12

59 Added 1/4 W to second column header in Table 10, Loop Filter Component Values With Damping Factor = 2.0

71 Added a note to recommended operating conditions table

72 Added a note to electrical characteristics table

77 Added Figure 23

Changed parameter td(WRN) in switching characteristics over recommended operating conditions for an external
101
memory interface write at 40 MHz [H = 0.5tc(CO)] table

108 Changed MAX value for ICCA in operating characteristics over recommended operating condition ranges table

110 Added note to Table 18

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 3

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

description
The TMS320LF240xA and TMS320LC240xA devices, new members of the TMS320C24x generation of
digital signal processor (DSP) controllers, are part of the TMS320C2000 platform of fixed-point DSPs. The
240xA devices offer the enhanced TMS320 DSP architectural design of the C2xx core CPU for low-cost,
low-power, and high-performance processing capabilities. Several advanced peripherals, optimized for digital
motor and motion control applications, have been integrated to provide a true single-chip DSP controller. While
code-compatible with the existing C24x DSP controller devices, the 240xA offers increased processing
performance (40 MIPS) and a higher level of peripheral integration. See the TMS320x240xA Device Summary
section for device-specific features.
The 240xA generation offers an array of memory sizes and different peripherals tailored to meet the specific
price/performance points required by various applications. Flash devices of up to 32K words offer a
cost-effective reprogrammable solution for volume production. The 240xA devices offer a password-based
“code security” feature which is useful in preventing unauthorized duplication of proprietary code stored in
on-chip Flash/ROM. Note that Flash-based devices contain a 256-word boot ROM to facilitate in-circuit
programming. The 240xA family also includes ROM devices that are fully pin-to-pin compatible with their Flash
counterparts.
All 240xA devices offer at least one event manager module which has been optimized for digital motor control
and power conversion applications. Capabilities of this module include center- and/or edge-aligned PWM
generation, programmable deadband to prevent shoot-through faults, and synchronized analog-to-digital
conversion. Devices with dual event managers enable multiple motor and/or converter control with a single
240xA DSP controller. Select EV pins have been provided with an “input-qualifier” circuitry, which minimizes
inadvertent pin-triggering by glitches.
The high-performance, 10-bit analog-to-digital converter (ADC) has a minimum conversion time of 375 ns and
offers up to 16 channels of analog input. The autosequencing capability of the ADC allows a maximum of
16 conversions to take place in a single conversion session without any CPU overhead.
A serial communications interface (SCI) is integrated on all devices to provide asynchronous communication
to other devices in the system. For systems requiring additional communication interfaces, the 2407A, 2406A,
2404A, and 2403A offer a 16-bit synchronous serial peripheral interface (SPI). The 2407A, 2406A, and 2403A
offer a controller area network (CAN) communications module that meets 2.0B specifications. To maximize
device flexibility, functional pins are also configurable as general-purpose inputs/outputs (GPIOs).
To streamline development time, JTAG-compliant scan-based emulation has been integrated into all devices.
This provides non-intrusive real-time capabilities required to debug digital control systems. A complete suite
of code-generation tools from C compilers to the industry-standard Code Composer Studio debugger
supports this family. Numerous third-party developers not only offer device-level development tools, but also
system-level design and development support.

TMS320C24x, TMS320C2000, TMS320, and C24x are trademarks of Texas Instruments.

4 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

TMS320x240xA device summary

Note that throughout this data sheet, 240xA is used as a generic name for the LF240xA/LC240xA generation
of devices.

Table 1. Hardware Features of 240xA Devices

FEATURE LF2407A LF2406A LF2403A LF2402A LC2406A LC2404A LC2403A LC2402A
C2xx DSP Core Yes Yes Yes Yes Yes Yes Yes Yes
Instruction Cycle 25 ns 25 ns 25 ns 25 ns 25 ns 25 ns 25 ns 25 ns
MIPS (40 MHz) 40 MIPS 40 MIPS 40 MIPS 40 MIPS 40 MIPS 40 MIPS 40 MIPS 40 MIPS
Dual-Access
544 544 544 544 544 544 544 544
RAM (DARAM)
RAM (16-bit
(16 bit word)
Single-Access
2K 2K 512 512 2K 1K 512 —
RAM (SARAM)
3.3-V On-chip Flash (16-bit word)
32K 32K 16K 8K — — — —
(4 sectors: 4K, 12K, 12K, 4K)
On-chip ROM (16-bit word) — — — — 32K 16K 16K 6K
Code Security for On-Chip Flash/ROM Yes Yes Yes Yes Yes Yes Yes Yes
Boot ROM Yes Yes Yes Yes — — — —
External Memory Interface Yes — — — — — — —
EVA, EVA, EVA, EVA,
Event Managers A and B (EVA and EVB) EVA EVA EVA EVA
EVB EVB EVB EVB
S General-Purpose (GP) Timers 4 4 2 2 4 4 2 2
S Compare (CMP)/PWM 12/16 12/16 6/8 6/8 12/16 12/16 6/8 6/8
S Capture (CAP)/QEP 6/4 6/4 3/2 3/2 6/4 6/4 3/2 3/2
S Input qualifier circuitry on
PDPINTx, CAPx, QEPx, Yes Yes Yes Yes Yes Yes Yes Yes
XINT1/2, and ADCSOC pins
S Status of PDPINTx pin reflected
Yes Yes Yes Yes Yes Yes Yes Yes
in COMCONx register
Watchdog Timer Yes Yes Yes Yes Yes Yes Yes Yes
10-Bit ADC Yes Yes Yes Yes Yes Yes Yes Yes
S Channels 16 16 8 8 16 16 8 8
S Conversion Time (minimum) 500 ns 500 ns 500 ns 500 ns 500 ns 500 ns 500 ns 500 ns
SPI Yes Yes Yes — Yes Yes Yes —
SCI Yes Yes Yes Yes Yes Yes Yes Yes
CAN Yes Yes Yes — Yes — Yes —
Digital I/O Pins
41 41 21 21 41 41 21 21
(Shared)
External Interrupts 5 5 3 3 5 5 3 3
Supply Voltage 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
144-pin 100-pin 64-pin 64-pin 100-pin 100-pin 64-pin 64-pin
Packaging
PGE PZ PAG PG PZ PZ PAG PG, PAG
Product Status:
Product Preview (PP)
PD PD PD PD PD PD PD PD
Advance Information (AI)
Production Data (PD)

Denotes features that are different/new compared to 240x devices.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 5

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

functional block diagram of the 2407A DSP controller

PLLF
PLLVCCA
XINT1/IOPA2 DARAM (B0) PLL Clock PLLF2
RS 256 Words XTAL1/CLKIN
CLKOUT/IOPE0 XTAL2
TMS2 ADCIN00−ADCIN07
BIO/IOPC1 C2xx DARAM (B1) ADCIN08−ADCIN15
DSP 256 Words VCCA
MP/MC
Core 10-Bit ADC VSSA
BOOT_EN/XF
(With Twin VREFHI
VDD (3.3 V)
Autosequencer)
VSS DARAM (B2) VREFLO

ÈÈÈÈÈÈÈ
32 Words XINT2/ADCSOC/IOPD0

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
SCITXD/IOPA0
SCI SCIRXD/IOPA1

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
SPISIMO/IOPC2
SARAM (2K Words)
SPISOMI/IOPC3

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
SPI SPICLK/IOPC4

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
SPISTE/IOPC5
TP1
CANTX/IOPC6

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
TP2 Flash/ROM CAN CANRX/IOPC7
VCCP(5V) (32K Words:

ÈÈÈÈÈÈÈ
4K/12K/12K/4K)
WD

ÈÈÈÈÈÈÈ
Port A(0−7) IOPA[0:7]
A0−A15 Port B(0−7) IOPB[0:7]

ÈÈÈÈÈÈÈ
D0−D15 Digital I/O Port C(0−7) IOPC[0:7]

ÈÈÈÈÈÈÈ
PS, DS, IS (Shared With Port D(0) IOPD[0]
R/W Other Pins) Port E(0−7) IOPE[0:7]

ÈÈÈÈÈÈÈ
RD Port F(0−6) IOPF[0:6]
TRST

ÈÈÈÈÈÈÈ
READY
External Memory
STRB Interface TDO

ÈÈÈÈÈÈÈ
WE TDI
ENA_144 JTAG Port TMS

ÈÈÈÈÈÈÈ TCK

ÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
VIS_OE EMU0
W/R / IOPC0 EMU1

ÈÈÈÈÈÈÈ
PDPINTA PDPINTB

ÈÈÈÈÈÈÈ
CAP1/QEP1/IOPA3 CAP4/QEP3/IOPE7
CAP2/QEP2/IOPA4 CAP5/QEP4/IOPF0

ÈÈÈÈÈÈÈ
CAP3/IOPA5 CAP6/IOPF1
PWM1/IOPA6 PWM7/IOPE1

ÈÈÈÈÈÈÈ
PWM2/IOPA7
Event Manager A Event Manager B
PWM8/IOPE2

ÈÈÈÈÈÈÈ
PWM3/IOPB0 D 3 × Capture Input D 3 × Capture Input PWM9/IOPE3
PWM4/IOPB1 D 6 × Compare/PWM D 6 × Compare/PWM PWM10/IOPE4

ÈÈÈÈÈÈÈ
PWM5/IOPB2 Output Output PWM11/IOPE5
D 2 × GP D 2 × GP

ÈÈÈÈÈÈÈ
PWM6/IOPB3 PWM12/IOPE6
Timers/PWM Timers/PWM
T1PWM/T1CMP/IOPB4 T3PWM/T3CMP/IOPF2

ÈÈÈÈÈÈÈ
T2PWM/T2CMP/IOPB5 T4PWM/T4CMP/IOPF3

ÈÈÈÈÈÈÈ
TDIRA/IOPB6 TDIRB/IOPF4
TCLKINA/IOPB7 TCLKINB/IOPF5

ÈÈÈ
ÈÈÈ
Indicates optional modules.
The memory size and peripheral selection of these modules change for different 240xA devices.

ÈÈÈ See Table 1 for device-specific details.

6 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pinouts

PGE PACKAGE†
(TOP VIEW)

TCLKINB/ IOPF5

BOOT_EN/XF ‡
XTAL1/CLKIN

BIO/ IOPC1
PDPINTB

ENA_144

ADCIN08
ADCIN00
ADCIN09
ADCIN01
ADCIN10
VREFLO
VREFHI
READY

MP/MC
XTAL2
IOPF6
V SSO

V SSO

V CCA
VDDO

V SSA
V SS
VDD
TMS

TDO

TCK
TDI

RS
D6

D5

D4

D3

D2

D1

D0

111
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112

110
109
TRST 1 108 ADCIN11
TDIRB/IOPF4 2 107 ADCIN02
VSSO 3 106 ADCIN12
VDDO 4 105 ADCIN03
D7 5 104 ADCIN13
T4PWM/T4CMP/IOPF3 6 103 ADCIN04
PDPINTA 7 102 ADCIN05
T3PWM/T3CMP/IOPF2 8 101 ADCIN14
D8 9 100 ADCIN06
PLLF2 10 99 ADCIN07
PLLF 11 98 ADCIN15
PLLVCCA 12 97 VIS_OE
D9 13 96 STRB
TDIRA/IOPB6 14 95 VDDO
D10 15 94 VSSO
T1PWM/T1CMP/IOPB4 16 93 RD
D11 17 92 R/W
T2PWM/T2CMP/IOPB5 18 TMS320LF2407A PGE 91 EMU1/OFF
W/R/IOPC0 19 90 EMU0
D12 20 89 WE
XINT2/ADCSOC/IOPD0 21 88 CAP4/QEP3/IOPE7
D13 22 87 DS
XINT1/IOPA2 23 86 VDD
D14 24 85 VSS
SCITXD/IOPA0 25 84 PS
SCIRXD/IOPA1 26 83 CAP1/QEP1/IOPA3
D15 27 82 IS
VSS 28 81 CAP5/QEP4/IOPF0
VDD 29 80 A0
SPISIMO/IOPC2 30 79 CAP2/QEP2/IOPA4
A15 31 78 A1
SPISOMI/IOPC3 32 77 VDDO
SPISTE/IOPC5 33 76 VSSO
A14 34 75 CAP3/IOPA5
SPICLK/IOPC4 35 74 A2
TMS2 36 73 CLKOUT/IOPE0
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
CAP6/ IOPF1
PWM7/ IOPE1
PWM4/ IOPB1
PWM12/ IOPE6

PWM9/ IOPE3
A11

V SS
VDD
V SSO

TP1

TP2

V SSO
A13

VDDO
A12

A10

A9

A8

A7
V CCP

A6

A5

VDDO
A4

A3
TCLKINA/ IOPB7

PWM6/ IOPB3

PWM5/ IOPB2

PWM3/ IOPB0

CANRX/ IOPC7

CANTX/ IOPC6
PWM11/ IOPE5

PWM10/ IOPE4

PWM8/ IOPE2
PWM2/ IOPA7

PWM1/ IOPA6

† Bold, italicized pin names indicate pin function after reset.

‡ BOOT_EN is available only on Flash devices.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 7

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pinouts (continued)
PZ PACKAGE†
( TOP VIEW )

CAP4/QEP3/ IOPE7

CAP1/QEP1/ IOPA3

CAP2/QEP2/ IOPA4
CAP5/QEP4/ IOPF0

CLKOUT/IOPE0
CAP3/ IOPA5
EMU1/ OFF
ADCIN02
ADCIN12
ADCIN03
ADCIN13
ADCIN04
ADCIN05
ADCIN14
ADCIN06
ADCIN07
ADCIN15
ADCIN11

V DDO

V DDO
V SSO

V SSO
EMU0

V DD
V SS
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
ADCIN10 76 50 CANTX/IOPC6‡
ADCIN01 77 49 CANRX/IOPC7‡
ADCIN09 78 48 CAP6/IOPF1
ADCIN00 79 47 VDDO
ADCIN08 80 46 VSSO
VREFLO 81 45 PWM7/IOPE1
VREFHI 82 44 TP2
VCCA 83 43 PWM8/IOPE2
VSSA 84 42 TP1
BIO/IOPC1 85 41 PWM9/IOPE3
BOOT_EN/XF§ 86 40 VCCP¶
XTAL1/CLKIN 87
TMS320LC2404A PZ 39 PWM1/IOPA6
XTAL2 88 TMS320LC2406A PZ 38 PWM10/IOPE4
TCLKINB/IOPF5 89 TMS320LF2406A PZ 37 PWM2/IOPA7
VSS 90 36 PWM3/IOPB0
VDD 91 35 VDD
IOPF6 92 34 VSS
RS 93 33 PWM4/IOPB1
TCK 94 32 PWM11/IOPE5
PDPINTB 95 31 PWM5/IOPB2
TDI 96 30 VDDO
VSSO 97 29 VSSO
VDDO 98 28 PWM6/IOPB3
TDO 99 27 PWM12/IOPE6
TMS 100 26 TCLKINA/IOPB7
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
SCIRXD/ IOPA1

SPISIMO/IOPC2
SPISOMI/ IOPC3
V SSO

PLLVCCA
V DDO

PDPINTA
TRST
TDIRB/ IOPF4

T4PWM/T4CMP/ IOPF3

T3PWM/T3CMP/ IOPF2

V SS
TDIRA/ IOPB6
T1PWM/T1CMP/ IOPB4
T2PWM/T2CMP/ IOPB5
IOPC0
XINT2/ADCSOC/ IOPD0

V DD

SPISTE/ IOPC5
SPICLK/ IOPC4
PLLF2
PLLF

XINT1/ IOPA2
SCITXD/ IOPA0

TMS2

† Bold, italicized pin names indicate pin function after reset.

‡ CANTX and CANRX are not available on LC2404A devices.
§ BOOT_EN is available only on Flash devices.
¶ On the ROM devices (LC240xA), V
CCP is a No Connect (NC).

8 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pinouts (continued)
PAG PACKAGE†‡
(TOP VIEW)

XINT2/ADCSOC/IOPD0
T2PWM/T2CMP/IOPB5
T1PWM/T1CMP/IOPB4
SPISOMI/IOPC3
SPISIMO/IOPC2
SCIRXD/IOPA1
SPICLK/IOPC4

SCITXD/IOPA0

PDPINTA
PLLV CCA

TRST
PLLF2

VDDO
TMS2

VSSO
PLLF
48 47 46 45 44 4342 41 40 39 38 37 36 35 34 33

TCLKINA/IOPB7 49 32 TMS
PWM6/IOPB3 50 31 TDO
VSSO 51 30 TDI
VDDO 52 29 TCK
PWM5/IOPB2 53 28 RS
PWM4/IOPB1 54 27 VDD
VSS 55 26 VSS
VDD 56 TMS320LF2403A PAG 25 XTAL2
PWM3/IOPB0 57 TMS320LC2403A PAG 24 XTAL1/CLKIN
PWM2/IOPA7 58 TMS320LC2402A PAG 23 BOOT_EN/XF§
PWM1/IOPA6 59 22 VSSA
VCCP¶ 60 21 VCCA
TP1 61 20 VREFHI
TP2 62 19 VREFLO
CANRX/IOPC7 63 18 ADCIN00
CANTX/IOPC6 64 17 ADCIN01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
ADCIN03
ADCIN07
ADCIN06
ADCIN05
ADCIN04

ADCIN02
VSS
CLKOUT/IOPE0

EMU0

VDDO
VSSO
VDD
CAP3/IOPA5
CAP2/QEP2/IOPA4
CAP1/QEP1/IOPA3

EMU1/ OFF

† Bold, italicized pin names indicate pin function after reset.

‡ For LC2402A, the following pins are different from what is shown:
Pin 45: IOPC2
Pin 46: IOPC3
Pin 47: IOPC4
Pin 63: IOPC7
Pin 64: IOPC6
§ BOOT_EN is available only on flash devices.
¶ On the ROM devices (LC240xA), V
CCP is a No Connect (NC).

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 9

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pinouts (continued)
PG PACKAGE†
(TOP VIEW)

XINT2/ADCSOC/ IOPD0
T2PWM/T2CMP/ IOPB5
T1PWM/T1CMP/ IOPB4
TCLKINA/ IOPB7

SCIRXD/ IOPA1
SCITXD/ IOPA0
PWM6/ IOPB3

PLLV CCA

PDPINTA
IOPC4
IOPC3
IOPC2

PLLF2
TMS2

TRST
VDDO
VSSO

VSSO
PLLF
51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
VDDO 52 32 TMS
PWM5/IOPB2 53 31 TDO
PWM4/IOPB1 54 30 TDI
VSS 55 29 TCK
VDD 56 28 RS
PWM3/IOPB0 57 27 VDD
TMS320LC2402A PG
PWM2/IOPA7 58 26 VSS
TMS320LF2402A PG
PWM1/IOPA6 59 25 XTAL2
VCCP§ 60 24 XTAL1/CLKIN
TP1 61 23 BOOT_EN/XF‡
TP2 62 22 VSSA
IOPC7 63 21 VCCA
IOPC6 64 20 VREFHI
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19
ADCIN07
ADCIN06
ADCIN05
ADCIN04
ADCIN03
ADCIN02
ADCIN01
ADCIN00
VDDO
CAP3/IOPA5
CAP2/QEP2/ IOPA4
CAP1/QEP1/ IOPA3
VSS

V REFLO
EMU1/ OFF
CLKOUT /IOPE0

EMU0

VSSO
VDD

† Bold, italicized pin names indicate pin function after reset.

‡ BOOT_EN is available only on Flash devices.
§ On the ROM devices (LC240xA), V
CCP is a No Connect (NC).

10 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions
The TMS320LF2407A device is the superset of all the 240xA devices. All signals are available on the 2407A
device. Table 2 lists the signals available in the 240xA generation of devices.

Table 2. LF240xA and LC240xA Pin List and Package Options†‡

2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
EVENT MANAGER A (EVA)
Capture input #1/quadrature encoder pulse input #1 (EVA) or
CAP1/QEP1/IOPA3 83 57 57 4
GPIO (↑)
Capture input #2/quadrature encoder pulse input #2 (EVA) or
CAP2/QEP2/IOPA4 79 55 55 3
GPIO (↑)
CAP3/IOPA5 75 52 52 2 Capture input #3 (EVA) or GPIO (↑)
PWM1/IOPA6 56 39 39 59 Compare/PWM output pin #1 (EVA) or GPIO (↑)
PWM2/IOPA7 54 37 37 58 Compare/PWM output pin #2 (EVA) or GPIO (↑)
PWM3/IOPB0 52 36 36 57 Compare/PWM output pin #3 (EVA) or GPIO (↑)
PWM4/IOPB1 47 33 33 54 Compare/PWM output pin #4 (EVA) or GPIO (↑)
PWM5/IOPB2 44 31 31 53 Compare/PWM output pin #5 (EVA) or GPIO (↑)
PWM6/IOPB3 40 28 28 50 Compare/PWM output pin #6 (EVA) or GPIO (↑)
T1PWM/T1CMP/IOPB4 16 12 12 40 Timer 1 compare output (EVA) or GPIO (↑)
T2PWM/T2CMP/IOPB5 18 13 13 41 Timer 2 compare output (EVA) or GPIO (↑)
Counting direction for general-purpose (GP) timer (EVA) or
TDIRA/IOPB6 14 11 11 GPIO. If TDIRA = 1, upward counting is selected. If
TDIRA = 0, downward counting is selected. (↑)
External clock input for GP timer (EVA) or GPIO. Note that
TCLKINA/IOPB7 37 26 26 49
the timer can also use the internal device clock. (↑)
EVENT MANAGER B (EVB)
Capture input #4/quadrature encoder pulse input #3 (EVB) or
CAP4/QEP3/IOPE7 88 60 60
GPIO (↑)
Capture input #5/quadrature encoder pulse input #4 (EVB) or
CAP5/QEP4/IOPF0 81 56 56
GPIO (↑)
CAP6/IOPF1 69 48 48 Capture input #6 (EVB) or GPIO (↑)
PWM7/IOPE1 65 45 45 Compare/PWM output pin #7 (EVB) or GPIO (↑)
PWM8/IOPE2 62 43 43 Compare/PWM output pin #8 (EVB) or GPIO (↑)
PWM9/IOPE3 59 41 41 Compare/PWM output pin #9 (EVB) or GPIO (↑)
PWM10/IOPE4 55 38 38 Compare/PWM output pin #10 (EVB) or GPIO (↑)
PWM11/IOPE5 46 32 32 Compare/PWM output pin #11 (EVB) or GPIO (↑)
PWM12/IOPE6 38 27 27 Compare/PWM output pin #12 (EVB) or GPIO (↑)
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 11

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
EVENT MANAGER B (EVB) (CONTINUED)
T3PWM/T3CMP/IOPF2 8 7 7 Timer 3 compare output (EVB) or GPIO (↑)
T4PWM/T4CMP/IOPF3 6 5 5 Timer 4 compare output (EVB) or GPIO (↑)
Counting direction for general-purpose (GP) timer
(EVB) or GPIO. If TDIRB = 1, upward counting is
TDIRB/IOPF4 2 2 2
selected. If TDIRB = 0, downward counting is
selected. (↑)
External clock input for GP timer (EVB) or GPIO.
TCLKINB/IOPF5 126 89 89 Note that the timer can also use the internal
device clock. (↑)
ANALOG-TO-DIGITAL CONVERTER (ADC)
ADCIN00 112 79 79 18 Analog input #0 to the ADC
ADCIN01 110 77 77 17 Analog input #1 to the ADC
ADCIN02 107 74 74 16 Analog input #2 to the ADC
ADCIN03 105 72 72 15 Analog input #3 to the ADC
ADCIN04 103 70 70 14 Analog input #4 to the ADC
ADCIN05 102 69 69 13 Analog input #5 to the ADC
ADCIN06 100 67 67 12 Analog input #6 to the ADC
ADCIN07 99 66 66 11 Analog input #7 to the ADC
ADCIN08 113 80 80 Analog input #8 to the ADC
ADCIN09 111 78 78 Analog input #9 to the ADC
ADCIN10 109 76 76 Analog input #10 to the ADC
ADCIN11 108 75 75 Analog input #11 to the ADC
ADCIN12 106 73 73 Analog input #12 to the ADC
ADCIN13 104 71 71 Analog input #13 to the ADC
ADCIN14 101 68 68 Analog input #14 to the ADC
ADCIN15 98 65 65 Analog input #15 to the ADC
VREFHI 115 82 82 20 ADC analog high-voltage reference input
VREFLO 114 81 81 19 ADC analog low-voltage reference input
VCCA 116 83 83 21 Analog supply voltage for ADC (3.3 V)§
VSSA 117 84 84 22 Analog ground reference for ADC
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

12 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
CONTROLLER AREA NETWORK (CAN), SERIAL COMMUNICATIONS INTERFACE (SCI), SERIAL PERIPHERAL INTERFACE (SPI)
CANRX 70 49 − 63 CAN receive data or GPIO (LF2403A) (↑)
CANRX/IOPC7
IOPC7 70 49 49 63 GPIO only (2402A) (↑)
CANTX 72 50 − 64 CAN transmit data or GPIO (LF2403A) (↑)
CANTX/IOPC6
IOPC6 72 50 50 64 GPIO only (2402A) (↑)
SCITXD/IOPA0 25 17 17 43 SCI asynchronous serial port transmit data or GPIO (↑)
SCI asynchronous serial port receive data or or
SCIRXD/IOPA1 26 18 18 44
GPIO (↑)
SPICLK 35 24 24 47 SPI clock or GPIO (LF2403A) (↑)
SPICLK/IOPC4
IOPC4 35 24 24 47 GPIO only (2402A) (↑)
SPISIMO 30 21 21 45 SPI slave in, master out or GPIO (LF2403A) (↑)
SPISIMO/IOPC2
IOPC2 30 21 21 45 GPIO only (2402A) (↑)
SPISOMI 32 22 22 46 SPI slave out, master in or GPIO (LF2403A) (↑)
SPISOMI/IOPC3
IOPC3 32 22 22 46 GPIO only (2402A) (↑)
SPISTE 33 23 23 −
SPISTE/IOPC5 transmit enable (optional) or GPIO (↑)
SPI slave transmit-enable
IOPC5 33 23 23 −
EXTERNAL INTERRUPTS, CLOCK
Device Reset (in) and Watchdog Reset (out).

Device reset. RS causes the device to terminate execution

and to set PC = 0. When RS is brought to a high level,
execution begins at location 0x0000 of program memory.
This pin is driven low by the DSP when a watchdog reset
RS 133 93 93 28
occurs. During watchdog reset, the RS pin will be driven
low for the watchdog reset duration of 128 CLKIN cycles.

The output buffer of this pin is an open-drain with an

internal pullup (20 µA, typical). It is recommended that this
pin be driven by an open-drain device. (↑)
Power drive protection interrupt input. This interrupt, when
activated, puts the PWM output pins (EVA) in the
PDPINTA 7 6 6 36 high-impedance state should motor drive/power converter
abnormalities, such as overvoltage or overcurrent, etc.,
arise. PDPINTA is a falling-edge-sensitive interrupt. (↑)
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 13

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
EXTERNAL INTERRUPTS, CLOCK (CONTINUED)
External user interrupt 1 or GPIO. Both XINT1 and XINT2
XINT1/IOPA2 23 16 16 are edge-sensitive. The edge polarity is
programmable. (↑)
External user interrupt 2 and ADC start of conversion or
GPIO. External “start-of-conversion” input for ADC/GPIO.
XINT2/ADCSOC/IOPD0 21 15 15 42
Both XINT1 and XINT2 are edge-sensitive. The edge
polarity is programmable. (↑)
Clock output or GPIO. This pin outputs either the CPU clock
(CLKOUT) or the watchdog clock (WDCLK). The selection
CLKOUT/IOPE0 73 51 51 1 is made by the CLKSRC bit (bit 14) of the system control
and status register (SCSR). This pin can be used as a GPIO
if not used as a clock output pin. (↑)
Power drive protection interrupt input. This interrupt, when
activated, puts the PWM output pins (EVB) in the
PDPINTB 137 95 95 high-impedance state should motor drive/power converter
abnormalities, such as overvoltage or overcurrent, etc.,
arise. PDPINTB is a falling-edge-sensitive interrupt. (↑)
OSCILLATOR, PLL, FLASH, BOOT, AND MISCELLANEOUS
PLL oscillator input pin. Crystal input to PLL/clock source
XTAL1/CLKIN 123 87 87 24 input to PLL. XTAL1/CLKIN is tied to one side of a reference
crystal.
Crystal output. PLL oscillator output pin. XTAL2 is tied to
XTAL2 124 88 88 25 one side of a reference crystal. This pin goes in the
high-impedance state when EMU1/OFF is active low.
PLLVCCA 12 10 10 39 PLL supply (3.3 V)
IOPF6 131 92 92 General-purpose I/O (↑)
Boot ROM enable, GPO, XF. This pin will be sampled as
BOOT_EN 121 86 − 23 input (BOOT_EN) to update SCSR2.3 (BOOT_EN bit)
BOOT_EN / during reset and then driven as an output signal for XF. After
XF reset, XF is driven high. ROM devices do not have boot
XF 121 86 86 23 ROM, hence, no BOOT_EN modes. The BOOT_EN pin
must be driven with a passive circuit only. (↑)
PLLF 11 9 9 38 PLL loop filter input 1
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

14 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
OSCILLATOR, PLL, FLASH, BOOT, AND MISCELLANEOUS (CONTINUED)
PLLF2 10 8 8 37 PLL loop filter input 2
Flash programming voltage pin. This pin must be connected to
a 5-V supply for Flash programming. The Flash cannot be
programmed if this pin is connected to GND. When not
programming the Flash (i.e., during normal device operation),
this pin can either be left connected to the 5-V supply or it can
VCCP (5V) 58 40 40 60 be tied to GND. This pin must not be left floating at any time. Do
not use any current-limiting resistor in series with the 5-V supply
on this pin. This pin is a “no connect” (NC) on ROM parts (i.e.,
this pin is not connected to any circuitry internal to the device).
Connecting this pin to 5 V or leaving it open makes no difference
on ROM parts.
TP1 60 42 42 61 Test pin 1. Do not connect.
TP2 63 44 44 62 Test pin 2. Do not connect.
Branch control input. BIO is polled by the BCND pma,BIO
instruction. If BIO is low, a branch is executed. If BIO is not used,
BIO/IOPC1 119 85 85 it should be pulled high. This pin is configured as a branch
control input by all device resets. It can be used as a GPIO, if
not used as a branch control input. (↑)
EMULATION AND TEST
Emulator I/O #0 with internal pullup. When TRST is driven high,
EMU0 90 61 61 7 this pin is used as an interrupt to or from the emulator system
and is defined as input/output through the JTAG scan. (↑)
Emulator pin 1. Emulator pin 1 disables all outputs. When TRST
is driven high, EMU1/OFF is used as an interrupt to or from the
emulator system and is defined as an input/output through the
JTAG scan. When TRST is driven low, this pin is configured as
OFF. EMU1/OFF, when active low, puts all output drivers in the
high-impedance state. Note that OFF is used exclusively for
EMU1/OFF 91 62 62 8
testing and emulation purposes (not for multiprocessing
applications). Therefore, for the OFF condition, the following
apply:
TRST = 0
EMU0 = 1
EMU1/OFF = 0 (↑)
TCK 135 94 94 29 JTAG test clock with internal pullup (↑)
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately
for proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 15

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
EMULATION AND TEST (CONTINUED)
JTAG test data input (TDI) with internal pullup. TDI
TDI 139 96 96 30 is clocked into the selected register (instruction or
data) on a rising edge of TCK. (↑)
JTAG scan out, test data output (TDO). The
contents of the selected register (instruction or
TDO 142 99 99 31
data) is shifted out of TDO on the falling edge of
TCK. (↓)
JTAG test-mode select (TMS) with internal pullup.
TMS 144 100 100 32 This serial control input is clocked into the TAP
controller on the rising edge of TCK. (↑)
JTAG test-mode select 2 (TMS2) with internal
pullup. This serial control input is clocked into the
TAP controller on the rising edge of TCK. Used for
TMS2 36 25 25 48 test and emulation only. This pin can be left
unconnected in user applications. If the PLL bypass
mode is desired, TMS2, TMS, and TRST should be
held low during reset. (↑)
JTAG test reset with internal pulldown. TRST, when
driven high, gives the scan system control of the
operations of the device. If this signal is not
connected or driven low, the device operates in its
functional mode, and the test reset signals are
ignored. (↓)

NOTE: Do not use pullup resistors on TRST; it has

an internal pulldown device. TRST is an active high
test pin and must be maintained low at all times
TRST 1 1 1 33
during normal device operation. In a low-noise
environment, TRST may be left floating. In other
instances, an external pulldown resistor is highly
recommended. The value of this resistor should be
based on drive strength of the debugger pods
applicable to the design. A 2.2-kΩ resistor generally
offers adequate protection. Since this is
application−specific, it is recommended that each
target board be validated for proper operation of the
debugger and the application. (I ↓)
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

16 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
ADDRESS, DATA, AND MEMORY CONTROL SIGNALS
Data space strobe. IS, DS, and PS are always
high unless low-level asserted for access to the
DS 87
relevant external memory space or I/O. They are
placed in the high-impedance state.¶
I/O space strobe. IS, DS, and PS are always high
unless low-level asserted for access to the
IS 82
relevant external memory space or I/O. They are
placed in the high-impedance state.¶
Program space strobe. IS, DS, and PS are always
high unless low-level asserted for access to the
PS 84
relevant external memory space or I/O. They are
placed in the high-impedance state.¶
Read/write qualifier signal. R/W indicates transfer
direction during communication to an external
device. It is normally in read mode (high), unless
R/W 92
low level is asserted for performing a write
operation. R/W is placed in the high-impedance
state.¶
Write/Read qualifier or GPIO. This is an inverted
W/R 19 R/W signal useful for zero-wait-state memory
interface. It is normally low, unless a memory write
W/R / IOPC0
operation is performed. See Table 12, Port C
IOPC0 19 14 14 section, for reset note regarding LF2406A and
LF2402A. (↑)
Read-enable strobe. Read-select indicates an
active, external read cycle. RD is active on all
RD 93
external program, data, and I / O reads. RD is
placed in the high-impedance state.¶
Write-enable strobe. The falling edge of WE
indicates that the device is driving the external
WE 89 data bus (D15 −D0). WE is active on all external
program, data, and I/O writes. WE is placed in the
high-impedance state.¶
External memory access strobe. STRB is always
high unless asserted low to indicate an external
STRB 96 bus cycle. STRB is active for all off-chip
accesses. STRB is placed in the high-impedance
state.¶
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 17

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
ADDRESS, DATA, AND MEMORY CONTROL SIGNALS (CONTINUED)
READY is pulled low to add wait states for external accesses.
READY indicates that an external device is prepared for a bus
transaction to be completed. If the device is not ready, it pulls the
READY pin low. The processor waits one cycle and checks
READY 120 READY again. Note that the processor performs
READY-detection if at least one software wait state is
programmed. To meet the external READY timing parameters,
the wait-state generator control register (WSGR) should be
programmed for at least one wait state. (↑)
Microprocessor/Microcomputer mode select. If this pin is low
during reset, the device is put in microcomputer mode and
program execution begins at 0000h of internal program memory
MP/MC 118 (Flash EEPROM). A high value during reset puts the device in
microprocessor mode and program execution begins at 0000h
of external program memory. This line sets the MP/MC bit (bit 2
in the SCSR2 register). (↓)
Active high to enable external interface signals. If pulled low, the
2407A behaves like the 2406A/2403A/2402A—i.e., it has no
ENA_144 122
external memory and generates an illegal address if DS is
asserted. This pin has an internal pulldown. (↓)
Visibility output enable (active when data bus is output). This pin
is active (low) whenever the external data bus is driving as an
VIS_OE 97 output during visibility mode. Can be used by external decode
logic to prevent data bus contention while running in visibility
mode.
A0 80 Bit 0 of the 16-bit address bus
A1 78 Bit 1 of the 16-bit address bus
A2 74 Bit 2 of the 16-bit address bus
A3 71 Bit 3 of the 16-bit address bus
A4 68 Bit 4 of the 16-bit address bus
A5 64 Bit 5 of the 16-bit address bus
A6 61 Bit 6 of the 16-bit address bus
A7 57 Bit 7 of the 16-bit address bus
A8 53 Bit 8 of the 16-bit address bus
A9 51 Bit 9 of the 16-bit address bus
A10 48 Bit 10 of the 16-bit address bus
A11 45 Bit 11 of the 16-bit address bus
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

18 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
ADDRESS, DATA, AND MEMORY CONTROL SIGNALS (CONTINUED)
A12 43 Bit 12 of the 16-bit address bus
A13 39 Bit 13 of the 16-bit address bus
A14 34 Bit 14 of the 16-bit address bus
A15 31 Bit 15 of the 16-bit address bus
D0 127 Bit 0 of 16-bit data bus (↑)
D1 130 Bit 1 of 16-bit data bus (↑)
D2 132 Bit 2 of 16-bit data bus (↑)
D3 134 Bit 3 of 16-bit data bus (↑)
D4 136 Bit 4 of 16-bit data bus (↑)
D5 138 Bit 5 of 16-bit data bus (↑)
D6 143 Bit 6 of 16-bit data bus (↑)
D7 5 Bit 7 of 16-bit data bus (↑)
D8 9 Bit 8 of 16-bit data bus (↑)
D9 13 Bit 9 of 16-bit data bus (↑)
D10 15 Bit 10 of 16-bit data bus (↑)
D11 17 Bit 11 of 16-bit data bus (↑)
D12 20 Bit 12 of 16-bit data bus (↑)
D13 22 Bit 13 of 16-bit data bus (↑)
D14 24 Bit 14 of 16-bit data bus (↑)
D15 27 Bit 15 of 16-bit data bus (↑)
POWER SUPPLY
29 20 20 6
50 35 35 27
VDD# Core supply +3.3
3 3 V.
V Digital logic supply voltage.
voltage
86 59 59 56
129 91 91
4 4 4 10
42 30 30 35
67 47 47 52 I/O buffer supply +3.3 V. Digital logic and buffer supply
VDDO#
77 54 54 voltage.
95 64 64
141 98 98
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 19

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

pin functions (continued)

Table 2. LF240xA and LC240xA Pin List and Package Options†‡ (Continued)
2403A,
LC2402A
LF2407A 2406A LC2404A (64-PAG)
PIN NAME DESCRIPTION
(144-PGE) (100-PZ) (100-PZ) and
2402A
(64-PG)
POWER SUPPLY (CONTINUED)
28 19 19 5
49 34 34 26
VSS# Core ground.
ground Digital logic ground reference
reference.
85 58 58 55
128 90 90
3 3 3 9
41 29 29 34
66 46 46 51
VSSO# 76 53 53 I/O buffer ground. Digital logic and buffer ground reference.
94 63 63
125 97 97
140
† Bold, italicized pin names indicate pin function after reset.
‡ GPIO − General-purpose input/output pin. All GPIOs come up as input after reset.
§ It is highly recommended that V
CCA be isolated from the digital supply voltage (and VSSA from digital ground) to maintain the specified accuracy
and improve the noise immunity of the ADC.
¶ Only when all of the following conditions are met: EMU1/OFF is low, TRST is low, and EMU0 is high
# No power supply pin (V , V
DD DDO, VCCA, VSS, or VSSO) should be left unconnected. All power supply pins must be connected appropriately for
proper device operation.
LEGEND: ↑ − Internal pullup ↓ − Internal pulldown (Typical active pullup/pulldown value is ±16 µA.)

20 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps
Hex Program Hex Data Hex I/O
0000 0000 0000
Memory-Mapped
Flash Sector 0 (4K)
005F Registers/Reserved Addresses
Interrupt Vectors (0000−003Fh)
Reserved † (0040−0043h)
User code begins at 0044h
0060
007F
0080
00FF
ÈÈÈÈÈÈÈÈÈ
On-Chip DARAM B2

ÈÈÈÈÈÈÈÈÈ Illegal
0FFF
1000
0100
01FF
0200
ÈÈÈÈÈÈÈÈÈ Reserved

On-Chip DARAM (B0)§ (CNF = 0)

02FF Reserved (CNF = 1)

ÈÈÈÈÈÈÈÈÈ
Flash Sector 1 (12K) 0300 On-Chip DARAM (B1)¶
03FF

ÈÈÈÈÈÈÈÈÈ
0400
Reserved
04FF

ÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉ
3FFF 0500 Illegal
4000 07FF

ÉÉÉÉÉÉÉÉÉ
0800 SARAM (2K) External

ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ
Internal (DON = 1)
Reserved (DON=0)

ÈÈÈÈÈÈÈÈÈ
Flash Sector 2 (12K) 0FFF
1000

ÈÈÈÈÈÈÈÈÈ Illegal

ÈÈÈÈÈÈÈÈÈ
6FFF 6FFF
7000 7000 Peripheral Memory-Mapped
Flash Sector 3 (4K)
Registers (System, WD, ADC,
7FFF
8000
ÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉ
SARAM (2K)
Internal (PON = 1)
7FFF
8000
SCI, SPI, CAN, I/O, Interrupts)

87FF
8800 ÉÉÉÉÉÉÉÉÉ
External (PON=0)

ÈÈÈÈÈÈÈÈÈ
FEFF
FF00
External
External
FF0E
ÈÈÈÈÈÈÈÈÈ Reserved

ÈÈÈÈÈÈÈÈÈ
FF0F Flash Control Mode Register
FDFF
FE00
Reserved‡ (CNF = 1)
FF10
ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
Reserved
External (CNF = 0) FFFE
FEFF
FF00 Wait-State Generator Control
On-Chip DARAM (B0)‡ (CNF = 1)
External (CNF = 0) Register (On-Chip)

ÉÉÉ
FFFF FFFF FFFF

ÉÉÉ SARAM (See Table 1 for details.)

ÈÈÈ
On-Chip Flash Memory (Sectored) − if MP/MC = 0
External Program Memory − if MP/MC = 1

ÈÈÈ
Reserved or Illegal

NOTE A: Boot ROM: If the boot ROM is enabled, then addresses 0000−00FF in the program space will be occupied by boot ROM.
† Addresses 0040h−0043h in on-chip program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved when
CNF = 1.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 1. TMS320LF2407A Memory Map

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 21

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

ÈÈÈÈÈÈÈÈÈÈ
Hex Program Hex Data Hex I/O
0000 0000 0000

ÈÈÈÈÈÈÈÈÈÈ
Memory-Mapped
Flash Sector 0 (4K)
005F Registers/Reserved Addresses
Interrupt Vectors (0000−003Fh)
Reserved † (0040−0043h)
User code begins at 0044h
0060
007F
0080ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
On-Chip DARAM B2
Illegal ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
00FF
0FFF 0100 Reserved

ÈÈÈÈÈÈÈÈÈÈ
1000 01FF
0200 On-Chip DARAM (B0)§ (CNF = 0)
02FF Reserved (CNF = 1)
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Flash Sector 1 (12K) 0300 On-Chip DARAM (B1)¶
03FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
0400 Reserved
04FF

ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ
3FFF 0500 Illegal
4000 07FF

ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ
0800
SARAM (2K) Illegal

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Internal (DON = 1)
Flash Sector 2 (12K) Reserved (DON = 0)

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
0FFF
1000

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Illegal
6FFF

ÈÈÈÈÈÈÈÈÈÈ
6FFF 7000 Peripheral Memory-Mapped

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
7000 Registers (System, WD, ADC,
Flash Sector 3 (4K) SCI, SPI, CAN, I/O, Interrupts)

ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

7FFF 7FFF
8000
8000

ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

SARAM (2K)
Internal (PON = 1)

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ Reserved (PON=0)
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
87FF
8800

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

FEFF
FF00

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

Illegal Reserved
FF0E

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
Illegal

ÈÈÈÈÈÈÈÈÈÈ
FF0F Flash Control Mode Register
FDFF
FE00
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FF10

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Reserved‡ Reserved
FFFE

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1) Reserved
External (CNF = 0)

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FFFF FFFF FFFF

ÉÉÉ
ÉÉÉ
ÈÈÈ
On-Chip Flash Memory (Sectored) SARAM (See Table 1 for details.)

ÈÈÈ Reserved or Illegal

NOTE A: Boot ROM: If the boot ROM is enabled, then addresses 0000−00FF in the program space will be occupied by boot ROM.
† Addresses 0040h−0043h in program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 2. TMS320LF2406A Memory Map

22 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

ÈÈÈÈÈÈÈÈÈ
Hex Data Hex I/O
Hex Program
0000 0000

ÈÈÈÈÈÈÈÈÈ
Memory-Mapped
0000 Flash Sector 0 (4K)
005F Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Interrupt Vectors (0000−003Fh)
0060 On-Chip DARAM B2
Reserved † (0040−0043h) 007F

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
User code begins at 0044h 0080
0FFF Illegal

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

00FF
1000 Flash Sector 1 (12K) 0100
3FFF Reserved

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
01FF
4000 0200 On-Chip DARAM (B0)§ (CNF = 0)

ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
02FF Reserved (CNF = 1)
ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
0300 On-Chip DARAM (B1)¶
03FF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

0400 Reserved
Reserved
04FF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈ
0500 Illegal
07FF

ÈÈÈÈÈÈÈÈÈ ÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈ

0800 SARAM (512 words) Illegal

ÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈ
Internal (DON = 1)
Reserved (DON = 0)

ÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
7FFF
8000 09FF
SARAM (512 words)

ÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

0A00
Internal (PON = 1) Reserved

ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Reserved (PON = 0) 0FFF
81FF 1000

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

Illegal
8200 6FFF
Reserved

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
87FF 7000 Peripheral Memory-Mapped
8800

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

Registers (System, WD, ADC,
SCI, I/O, Interrupts)
7FFF

ÈÈÈÈÈÈÈÈÈ 8000
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Illegal FEFF
FF00

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ

Reserved
FF0E

ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Illegal FF0F Flash Control Mode Register
FDFF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
FE00
FF10

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Reserved‡ Reserved
FFFE

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1) Reserved
Reserved (CNF = 0)
FFFF FFFF
ÈÈÈÈÈÈÈÈÈ FFFF
ÈÈÈÈÈÈÈÈÈ
ÉÉÉ
ÉÉÉ
ÈÈÈ
On-Chip Flash Memory (Sectored) SARAM (See Table 1 for details.)

ÈÈÈ Reserved or Illegal

NOTE A: Boot ROM: If the boot ROM is enabled, then addresses 0000−00FF in the program space will be occupied by boot ROM.
† Addresses 0040h−0043h in program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 3. TMS320LF2403A Memory Map

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 23

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

ÈÈÈÈÈÈÈÈÈÈ
Hex Data Hex I/O
Hex Program
0000 0000

ÈÈÈÈÈÈÈÈÈÈ
Memory-Mapped
0000 Flash Sector 0 (4K)
005F Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Interrupt Vectors (0000−003Fh)
0060 On-Chip DARAM B2
Reserved † (0040−0043h) 007F

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
User code begins at 0044h 0080
0FFF Illegal

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

00FF
1000 Flash Sector 1 (4K) 0100
1FFF Reserved

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
01FF
2000 0200 On-Chip DARAM (B0)§ (CNF = 0)

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
02FF
ÈÈÈÈÈÈÈÈÈÈ
Reserved (CNF = 1)

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
0300 On-Chip DARAM (B1)¶
03FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

0400 Reserved
Reserved
04FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

ÉÉÉÉÉÉÉÉÉÉ
0500 Illegal
07FF

ÈÈÈÈÈÈÈÈÈÈ ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ

0800 SARAM (512 words) Illegal

ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ
Internal (DON = 1)
Reserved (DON = 0)

ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
7FFF
8000 09FF
SARAM (512 words)

ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

0A00
Internal (PON = 1) Reserved

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Reserved (PON = 0) 0FFF
81FF 1000

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

Illegal
8200 6FFF
Reserved

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
87FF 7000 Peripheral Memory-Mapped
8800

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

Registers (System, WD, ADC,
SCI, I/O, Interrupts)
7FFF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
8000
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Illegal FEFF
FF00

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ

Reserved
FF0E

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Illegal FF0F Flash Control Mode Register
FDFF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FE00
FF10

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Reserved‡ Reserved
FFFE

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1) Reserved
Reserved (CNF = 0)
FFFF
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FFFF FFFF

ÉÉÉ
ÉÉÉ
ÈÈÈ
On-Chip Flash Memory (Sectored) SARAM (See Table 1 for details.)

ÈÈÈ Reserved or Illegal

NOTE A: Boot ROM: If the boot ROM is enabled, then addresses 0000−00FF in the program space will be occupied by boot ROM.
† Addresses 0040h−0043h in program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 4. TMS320LF2402A Memory Map

24 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

Hex Program Hex Data
0000 0000 Memory-Mapped
Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈÈ
005F
0060
On-Chip DARAM B2

ÈÈÈÈÈÈÈÈÈÈ
007F
0080 Illegal

ÈÈÈÈÈÈÈÈÈÈ
00FF
0100 Reserved
01FF
0200 On-Chip DARAM (B0)§ (CNF = 0)
On-Chip ROM (32K)
Reserved (CNF = 1)
02FF

ÈÈÈÈÈÈÈÈÈÈ
Interrupt Vectors (0000−003Fh) 0300 On-Chip DARAM (B1)¶
Reserved † (0040−0043h) 03FF

ÈÈÈÈÈÈÈÈÈÈ
User code begins at 0044h 0400 Reserved
04FF

ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ
0500 Illegal
07FF

ÉÉÉÉÉÉÉÉÉÉ
0800
SARAM (2K)

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ
7FBF Internal (DON = 1)
Reserved (DON = 0)

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ
7FC0 0FFF
1000

ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ
Reserved
Illegal
7FFF

ÉÉÉÉÉÉÉÉÉÉ
6FFF
8000 SARAM (2K) 7000
Peripheral Memory-Mapped

ÉÉÉÉÉÉÉÉÉÉ
Internal (PON = 1) Registers (System, WD, ADC,
Reserved (PON = 0)

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
87FF SCI, SPI, CAN, I/O, Interrupts)
7FFF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
8800 8000

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Reserved
Illegal

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ Illegal

ÈÈÈÈÈÈÈÈÈÈ
FDFF
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
FE00

ÈÈÈÈÈÈÈÈÈÈ
Reserved‡

ÈÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1)
Reserved (CNF = 0)
FFFF FFFF
ÈÈÈÈÈÈÈÈÈÈ
On-Chip ROM ÉÉÉ
ÉÉÉ SARAM (See Table 1 for details.)

† Addresses 0040h−0043h in program memory are reserved for code security passwords.
ÈÈÈ
ÈÈÈ
Reserved or Illegal

‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 5. TMS320LC2406A Memory Map

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 25

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

Hex Program Hex Data
0000 0000 Memory-Mapped
Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈ
005F
On-Chip ROM (16K) 0060
007F On-Chip DARAM B2

Interrupt Vectors (0000−003Fh)

Reserved † (0040−0043h)
User code begins at 0044h
0080
00FF
0100
01FF
ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
Illegal

Reserved
0200 On-Chip DARAM (B0)§ (CNF = 0)
3FBF Reserved (CNF = 1)
02FF
3FC0

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
0300 On-Chip DARAM (B1)¶
Reserved 03FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
3FFF 0400 Reserved
4000 04FF

ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉ
Reserved 0500 Illegal
7FFF 07FF

ÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉ
8000 0800
SARAM (1K) SARAM (1K)

ÉÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈÈ ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ
Internal (PON = 1) Internal (DON = 1)
Reserved (PON = 0) Reserved (DON = 0)

ÈÈÈÈÈÈÈÈÈÈ ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ
83FF 0BFF
8400 0C00

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Illegal
6FFF

ÈÈÈÈÈÈÈÈÈÈ
7000
Peripheral Memory-Mapped

ÈÈÈÈÈÈÈÈÈÈ
Registers (System, WD, ADC,

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
SCI, SPI, I/O, Interrupts)
7FFF
8000

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Reserved

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ Illegal

FDFF
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
FE00

ÈÈÈÈÈÈÈÈÈ
Reserved‡

ÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1)
Reserved (CNF = 0)
FFFF FFFF
ÈÈÈÈÈÈÈÈÈ
On-Chip ROM ÉÉ
ÉÉ SARAM (See Table 1 for details.)

† Addresses 0040h−0043h in program memory are reserved for code security passwords.
ÈÈ
ÈÈ
Reserved or Illegal

‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 6. TMS320LC2404A Memory Map

26 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

Hex Program Hex Data
0000 0000 Memory-Mapped
On-chip ROM (16K)
Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈÈ
005F
Interrupt Vectors (0000−003Fh) 0060 On-Chip DARAM B2

ÈÈÈÈÈÈÈÈÈÈ
007F
Reserved † (0040−0043h) 0080
User code begins at 0044h Illegal

ÈÈÈÈÈÈÈÈÈÈ
00FF
0100 Reserved
01FF
0200 On-Chip DARAM (B0)§ (CNF = 0)
3FBF
02FF Reserved (CNF = 1)
3FCO

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Reserved 0300 On-Chip DARAM (B1)¶
3FFF 03FF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
4000 0400 Reserved
04FF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉÉÉÉÉÉÉÉ
0500 Illegal
Reserved 07FF

ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
0800
ÉÉÉÉÉÉÉÉÉÉSARAM (512 words)
7FFF
ÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉ
Internal (DON = 1)

ÈÈÈÈÈÈÈÈÈÈ
8000 Reserved (DON = 0)
SARAM (512 words) 09FF

ÉÉÉÉÉÉÉÉÉ ÈÈÈÈÈÈÈÈÈÈ
Internal (PON = 1) 0A00
Reserved (PON = 0) Reserved

ÉÉÉÉÉÉÉÉÉ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
81FF 0FFF
8200 1000

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Illegal
6FFF

ÈÈÈÈÈÈÈÈÈ
7000 Peripheral Memory-Mapped

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
Registers (System, WD, ADC,
SCI, I/O, Interrupts)

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
7FFF
Reserved 8000

ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈÈ
FDFF
Illegal
FE00

FEFF
Reserved‡
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
FF00
On-Chip DARAM (B0)‡ (CNF = 1)
Reserved (CNF = 0)
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÉÉÉ
FFFF
FFFF

On-Chip ROM
ÉÉÉ SARAM (See Table 1 for details.)

†
ÈÈÈ
ÈÈÈ Reserved or Illegal

Addresses 0040h−0043h in program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 7. TMS320LC2403A Memory Map

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 27

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

memory maps (continued)

Hex Program Hex Data
0000 0000
On-Chip ROM (6K) Memory-Mapped
Registers/Reserved Addresses

ÈÈÈÈÈÈÈÈÈ
Interrupt Vectors (0000−003Fh) 005F
Reserved † (0040−0043h) 0060 On-Chip DARAM B2

ÈÈÈÈÈÈÈÈÈ
007F
User code begins at 0044h 0080 Illegal
17BF
00FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
17C0 Reserved 0100
17FF Reserved

ÈÈÈÈÈÈÈÈÈÈ
01FF
1800 Reserved 0200 On-Chip DARAM (B0)§ (CNF = 0)

ÈÈÈÈÈÈÈÈÈÈ
7FFF Reserved (CNF = 1)
8000 02FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Reserved 0300
87FF On-Chip DARAM (B1)¶
03FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
8800 0400 Reserved
04FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
0500 Illegal
07FF

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
0800
Reserved

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
0FFF
1000

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
Illegal
6FFF

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
7000 Peripheral Memory-Mapped

ÈÈÈÈÈÈÈÈÈ
Registers (System, WD, ADC,
SCI, I/O, Interrupts)

ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
7FFF
Reserved 8000

ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
Illegal

FDFF
ÈÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈ
FE00

ÈÈÈÈÈÈÈÈÈ
Reserved‡

ÈÈÈÈÈÈÈÈÈ
FEFF
FF00

ÈÈÈÈÈÈÈÈÈ
On-Chip DARAM (B0)‡ (CNF = 1)
Reserved (CNF = 0)
FFFF
ÈÈÈÈÈÈÈÈÈ
FFFF

On-Chip ROM ÈÈÈ

ÈÈÈ Reserved or Illegal
† Addresses 0040h−0043h in program memory are reserved for code security passwords.
‡ When CNF = 1, addresses FE00h−FEFFh and FF00h−FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h has the same effect as a write to FF00h. For simplicity, addresses FE00h−FEFFh are referred to as reserved.
§ When CNF = 0, addresses 0100h−01FFh and 0200h−02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h has the same effect as a write to 0200h. For simplicity, addresses 0100h−01FFh are referred to as reserved.
¶ Addresses 0300h−03FFh and 0400h−04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h−04FFh are referred to as reserved.

Figure 8. TMS320LC2402A Memory Map

28 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral memory map of the 2407A/2406A

Hex
0000
Reserved
0003
Interrupt-Mask Register 0004
Reserved 0005
Interrupt Flag Register 0006
Emulation Registers 0007
and Reserved 005F

ÈÈÈÈÈÈÈÈÈ
Hex
0000

005F
Memory-Mapped Registers
and Reserved
ÈÈÈÈÈÈÈÈÈ Illegal 7000−700F

ÈÈÈÈÈÈÈÈÈ
0060 System Configuration and
On-Chip DARAM B2 7010−701F
007F Control Registers

ÈÈÈÈÈÈÈÈÈ
0080
Illegal
Watchdog Timer Registers 7020−702F

ÈÈÈÈÈÈÈÈÈ
00FF
0100

ÈÈÈÈÈÈÈÈÈ
Reserved Illegal 7030−703F

ÈÈÈÈÈÈÈÈÈ
01FF SPI 7040−704F
0200

ÈÈÈÈÈÈÈÈÈ
SCI 7050−705F
On-Chip DARAM B0
Illegal

ÈÈÈÈÈÈÈÈÈ
02FF 7060−706F
0300
On-Chip DARAM B1

ÈÈÈÈÈÈÈÈÈ
External-Interrupt Registers 7070−707F
03FF
0400 Illegal 7080−708F

ÈÈÈÈÈÈÈÈÈ
Reserved
04FF Digital I/O Control Registers 7090−709F
0500
ÈÈÈÈÈÈÈÈÈ Illegal
ÈÈÈÈÈÈÈÈÈ
ADC Control Registers 70A0−70BF

ÈÈÈÈÈÈÈÈÈ
07FF
0800 Illegal 70C0−70FF

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
SARAM (2K)
0FFF CAN Control Registers 7100−710E

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
1000
Illegal Illegal 710F−71FF

ÈÈÈÈÈÈÈÈÈ
6FFF
7000 CAN Mailbox 7200−722F
Peripheral Frame 1 (PF1)

ÈÈÈÈÈÈÈÈÈ
73FF Illegal
7400 7230−73FF

ÈÈÈÈÈÈÈÈÈ
Peripheral Frame 2 (PF2)
743F Event Manager − EVA

ÈÈÈÈÈÈÈÈÈ
7440 Illegal
74FF General-Purpose
7400−7408

ÈÈÈÈÈÈÈÈÈ
7500 Timer Registers
Peripheral Frame 3 (PF3) Compare, PWM, and

ÈÈÈÈÈÈÈÈÈ
753F 7411−7419
7540 Deadband Registers
Illegal
77EF Capture and QEP Registers 7420−7429
77F0

ÈÈÈÈÈÈÈÈÈ
Code Security Passwords Interrupt Mask, Vector and
77F3 742C−7431
Flag Registers

ÈÈÈÈÈÈÈÈÈ ÈÈÈÈÈÈÈÈÈ
77F4
Reserved
77FF Illegal

ÈÈÈÈÈÈÈÈÈ
7432−743F
7800
7FFF Illegal
8000 Event Manager − EVB
External†

ÈÈÈÈ
FFFF General-Purpose
7500−7508

ÈÈÈÈ
Timer Registers
“Illegal” indicates that access to
Compare, PWM, and

ÈÈÈÈ
Illegal these addresses causes a 7511−7519
Deadband Registers
nonmaskable interrupt (NMI).
Capture and QEP Registers 7520−7529
“Reserved” indicates addresses that Interrupt Mask, Vector, and
Reserved
are reserved for test. Flag Registers 752C−7531

† Available in LF2407A only Reserved 7532−753F

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 29

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

device reset and interrupts

The TMS320x240xA software-programmable interrupt structure supports flexible on-chip and external interrupt
configurations to meet real-time interrupt-driven application requirements. The LF240xA recognizes three types
of interrupt sources.
D Reset (hardware- or software-initiated) is unarbitrated by the CPU and takes immediate priority over any
other executing functions. All maskable interrupts are disabled until the reset service routine enables them.
The LF240xA devices have two sources of reset: an external reset pin and a watchdog timer time-out
(reset).
D Hardware-generated interrupts are requested by external pins or by on-chip peripherals. There are two
types:
− External interrupts are generated by one of four external pins corresponding to the interrupts XINT1,
XINT2, PDPINTA, and PDPINTB. These four can be masked both by dedicated enable bits and by the
CPU interrupt mask register (IMR), which can mask each maskable interrupt line at the DSP core.
− Peripheral interrupts are initiated internally by these on-chip peripheral modules: event manager A,
event manager B, SPI, SCI, CAN, and ADC. They can be masked both by enable bits for each event in
each peripheral and by the CPU IMR, which can mask each maskable interrupt line at the DSP core.
D Software-generated interrupts for the LF240xA devices include:
− The INTR instruction. This instruction allows initialization of any LF240xA interrupt with software. Its
operand indicates the interrupt vector location to which the CPU branches. This instruction globally
disables maskable interrupts (sets the INTM bit to 1).
− The NMI instruction. This instruction forces a branch to interrupt vector location 24h. This instruction
globally disables maskable interrupts. 240xA devices do not have the NMI hardware signal, only
software activation is provided.
− The TRAP instruction. This instruction forces the CPU to branch to interrupt vector location 22h. The
TRAP instruction does not disable maskable interrupts (INTM is not set to 1); therefore, when the CPU
branches to the interrupt service routine, that routine can be interrupted by the maskable hardware
interrupts.
− An emulator trap. This interrupt can be generated with either an INTR instruction or a TRAP instruction.
Six core interrupts (INT1−INT6) are expanded using a peripheral interrupt expansion (PIE) module identical to
the F24x devices. The PIE manages all the peripheral interrupts from the 240xA peripherals and are grouped to
share the six core level interrupts. Figure 9 shows the PIE block diagram for hardware-generated interrupts.
The PIE block diagram (Figure 9) and the interrupt table (Table 3) explain the grouping and interrupt vector
maps. LF240xA devices have interrupts identical to those of the F24x devices and should be completely
code-compatible. 240xA devices also have peripheral interrupts identical to those of the F24x − plus additional
interrupts for new peripherals such as event manager B. Though the new interrupts share the 24x interrupt
grouping, they all have a unique vector to differentiate among the interrupts. See Table 3 for details.

30 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

device reset and interrupts (continued)

PDPINTA
PIE IMR
PDPINTB
ADCINT
IFR
XINT1
XINT2
Level 1
SPIINT IRQ GEN
RXINT INT1
TXINT
CANMBINT
CANERINT
CMP1INT
CMP2INT INT2
CMP3INT
CMP4INT
CMP5INT
CMP6INT
T1PINT Level 2
T1CINT IRQ GEN
T1UFINT
T1OFINT
T3PINT
T3CINT
T3UFINT CPU
T3OFINT
T2PINT
T2CINT INT3
T2UFINT
T2OFINT Level 3
T4PINT IRQ GEN
T4CINT
T4UFINT
T4OFINT

CAP1INT INT4
CAP2INT
CAP3INT Level 4
CAP4INT IRQ GEN
CAP5INT
CAP6INT
SPIINT
RXINT
Level 5 INT5
TXINT IRQ GEN
CANMBINT
CANERINT
ADCINT INT6
Level 6
XINT1 IRQ GEN
XINT2 IACK

PIVR & Logic

PIRQR#
PIACK#

Data Bus Addr Bus

Indicates change with respect to the TMS320F243/F241/C242 data sheets.
Interrupts from external interrupt pins. The remaining interrupts are internal to the peripherals.

Figure 9. Peripheral Interrupt Expansion (PIE) Module Block Diagram for Hardware-Generated Interrupts

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 31

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

interrupt request structure

Table 3. LF240xA/LC240xA Interrupt Source Priority and Vectors

CPU
BIT PERIPHERAL
INTERRUPT SOURCE
INTERRUPT OVERALL POSITION IN INTERRUPT MASK-
AND PERIPHERAL DESCRIPTION
NAME PRIORITY PIRQRx AND VECTOR ABLE?
VECTOR MODULE
PIACKRx (PIV)
ADDRESS
RSN RS pin, Reset from pin, watchdog
Reset 1 N/A N
0000h Watchdog timeout
−
Reserved 2 N/A N CPU Emulator trap
0026h
NMI Nonmaskable Nonmaskable interrupt,
NMI 3 N/A N
0024h Interrupt software interrupt only
PDPINTA 4 0.0 0020h Y EVA Power device protection
PDPINTB 5 2.0 0019h Y EVB interrupt pins
ADC interrupt in
ADCINT 6 0.1 0004h Y ADC
high-priority mode
External
XINT1 7 0.2 0001h Y
Interrupt Logic External interrupt pins in high
External priority
XINT2 8 0.3 0011h Y
Interrupt Logic
INT1
SPIINT 9 0.4 0005h Y SPI SPI interrupt pins in high priority
0002h
SCI receiver interrupt in
RXINT 10 0.5 0006h Y SCI
high-priority mode
SCI transmitter interrupt in
TXINT 11 0.6 0007h Y SCI
high-priority mode
CAN mailbox in high-priority
CANMBINT 12 0.7 0040 Y CAN
mode
CAN error interrupt in
CANERINT 13 0.8 0041 Y CAN
high-priority mode
CMP1INT 14 0.9 0021h Y EVA Compare 1 interrupt
CMP2INT 15 0.10 0022h Y EVA Compare 2 interrupt
CMP3INT 16 0.11 0023h Y EVA Compare 3 interrupt
T1PINT 17 0.12 0027h Y EVA Timer 1 period interrupt
INT2
T1CINT 18 0.13 0028h Y EVA Timer 1 compare interrupt
0004h
T1UFINT 19 0.14 0029h Y EVA Timer 1 underflow interrupt
T1OFINT 20 0.15 002Ah Y EVA Timer 1 overflow interrupt
CMP4INT 21 2.1 0024h Y EVB Compare 4 interrupt
CMP5INT 22 2.2 0025h Y EVB Compare 5 interrupt
CMP6INT 23 2.3 0026h Y EVB Compare 6 interrupt
T3PINT 24 2.4 002Fh Y EVB Timer 3 period interrupt
T3CINT 25 2.5 0030h Y EVB Timer 3 compare interrupt
T3UFINT 26 2.6 0031h Y EVB Timer 3 underflow interrupt
T3OFINT 27 2.7 0032h Y EVB Timer 3 overflow interrupt
†See the TMS320LF/LC240xA DSP Controllers Reference Guide: System and Peripherals (literature number SPRU357) for more information.
NOTE: Some interrupts may not be available in a particular device due to the absence of a peripheral. See Table 1 for more details.

New peripheral interrupts and vectors with respect to the F243/F241 devices.

32 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

interrupt request structure (continued)

Table 3. LF240xA/LC240xA Interrupt Source Priority and Vectors (Continued)
CPU
BIT PERIPHERAL
INTERRUPT SOURCE
INTERRUPT OVERALL POSITION IN INTERRUPT MASK-
AND PERIPHERAL DESCRIPTION
NAME PRIORITY PIRQRx AND VECTOR ABLE?
VECTOR MODULE
PIACKRx (PIV)
ADDRESS
T2PINT 28 1.0 002Bh Y EVA Timer 2 period interrupt
T2CINT 29 1.1 002Ch Y EVA Timer 2 compare interrupt
T2UFINT 30 1.2 002Dh Y EVA Timer 2 underflow interrupt
T2OFINT 31 INT3 1.3 002Eh Y EVA Timer 2 overflow interrupt
T4PINT 32 0006h 2.8 0039h Y EVB Timer 4 period interrupt
T4CINT 33 2.9 003Ah Y EVB Timer 4 compare interrupt
T4UFINT 34 2.10 003Bh Y EVB Timer 4 underflow interrupt
T4OFINT 35 2.11 003Ch Y EVB Timer 4 overflow interrupt
CAP1INT 36 1.4 0033h Y EVA Capture 1 interrupt
CAP2INT 37 1.5 0034h Y EVA Capture 2 interrupt
CAP3INT 38 INT4 1.6 0035h Y EVA Capture 3 interrupt
CAP4INT 39 0008h 2.12 0036h Y EVB Capture 4 interrupt
CAP5INT 40 2.13 0037h Y EVB Capture 5 interrupt
CAP6INT 41 2.14 0038h Y EVB Capture 6 interrupt
SPIINT 42 1.7 0005h Y SPI SPI interrupt (low priority)
SCI receiver interrupt
RXINT 43 1.8 0006h Y SCI
(low-priority mode)
SCI transmitter interrupt
TXINT 44 INT5 1.9 0007h Y SCI
(low-priority mode)
000Ah
CAN mailbox interrupt
CANMBINT 45 1.10 0040h Y CAN
(low-priority mode)
CAN error interrupt
CANERINT 46 1.11 0041h Y CAN
(low-priority mode)
ADC interrupt
ADCINT 47 1.12 0004h Y ADC
(low priority)
INT6 External
XINT1 48 1.13 0001h Y
000Ch Interrupt Logic External interrupt pins
External (low-priority mode)
XINT2 49 1.14 0011h Y
Interrupt Logic
Reserved 000Eh N/A Y CPU Analysis interrupt
TRAP N/A 0022h N/A N/A CPU TRAP instruction
Phantom
Interrupt N/A N/A 0000h N/A CPU Phantom interrupt vector
Vector
INT8−INT16 N/A 0010h−0020h N/A N/A CPU
Software interrupt vectors†
INT20−INT31 N/A 00028h−0003Fh N/A N/A CPU
† See the TMS320LF/LC240xA DSP Controllers Reference Guide: System and Peripherals (literature number SPRU357) for more information.
NOTE: Some interrupts may not be available in a particular device due to the absence of a peripheral. See Table 1 for more details.

New peripheral interrupts and vectors with respect to the F243/F241 devices.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 33

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

DSP CPU core

The TMS320x240xA devices use an advanced Harvard-type architecture that maximizes processing power by
maintaining two separate memory bus structures — program and data — for full-speed execution. This multiple
bus structure allows data and instructions to be read simultaneously. Instructions support data transfers
between program memory and data memory. This architecture permits coefficients that are stored in program
memory to be read in RAM, thereby eliminating the need for a separate coefficient ROM. This, coupled with a
four-deep pipeline, allows the LF240xA/LC240xA devices to execute most instructions in a single cycle. See
the functional block diagram of the 240xA DSP CPU for more information.

TMS320x240xA instruction set

The x240xA microprocessor implements a comprehensive instruction set that supports both numeric-intensive
signal-processing operations and general-purpose applications, such as multiprocessing and high-speed
control.
For maximum throughput, the next instruction is prefetched while the current one is being executed. Because
the same data lines are used to communicate to external data, program, or I/O space, the number of cycles an
instruction requires to execute varies, depending upon whether the next data operand fetch is from internal or
external memory. Highest throughput is achieved by maintaining data memory on chip and using either internal
or fast external program memory.
addressing modes
The TMS320x240xA instruction set provides four basic memory-addressing modes: direct, indirect, immediate,
and register.
In direct addressing, the instruction word contains the lower seven bits of the data memory address. This field
is concatenated with the nine bits of the data memory page pointer (DP) to form the 16-bit data memory address.
Therefore, in the direct-addressing mode, data memory is paged effectively with a total of 512 pages, with each
page containing 128 words.
Indirect addressing accesses data memory through the auxiliary registers. In this addressing mode, the address
of the instruction operand is contained in the currently selected auxiliary register. Eight auxiliary registers
(AR0−AR7) provide flexible and powerful indirect addressing. To select a specific auxiliary register, the auxiliary
register pointer (ARP) is loaded with a value from 0 to 7 for AR0 through AR7, respectively.

scan-based emulation
TMS320x2xx devices incorporate scan-based emulation logic for code-development and hardware-
development support. Scan-based emulation allows the emulator to control the processor in the system without
the use of intrusive cables to the full pinout of the device. The scan-based emulator communicates with the x2xx
by way of the IEEE 1149.1-compatible (JTAG) interface. The x240xA DSPs do not include boundary scan. The
scan chain of these devices is useful for emulation function only.

34 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

functional block diagram of the 2407A DSP CPU

Program Bus

IS
DS
PS
MUX
R/W XTAL1
STRB CLKOUT

Program Bus
READY XTAL2 NPAR

Data Bus
XF

Control
16 PC PAR MSTACK MUX

RD
RS WE
Stack 8 × 16

MP/MC
XINT[1−2]
2

FLASH EEPROM/
ROM Program Control
(PCTRL)
16
MUX

A15−A0
16 16
16

16
16
MUX

D15−D0
16
16 Data Bus

16 16
Data Bus

16
16
3 9 7 16
LSB 16 16
AR0(16) from
AR1(16) DP(9) IR 16
MUX
AR2(16)
MUX 16
ARP(3) AR3(16)
3 9
3 AR4(16)
AR5(16) TREG0(16)
ARB(3) AR6(16)
Multiplier
AR7(16)

3 ISCALE (0−16) PREG(32)

16
32

PSCALE (−6,
0,
1,
4)

32 32

16
MUX

ARAU(16) MUX
32

CALU(32)
32
16 Memory Map
Register
MUX MUX 32
IMR (16)
IFR (16)
Data/Prog Data
Program Bus

C ACCH(16) ACCL(16)
GREG (16) DARAM DARAM
B0 (256 × 16) B2 (32 × 16) 32

B1 (256 × 16)
OSCALE (0−7)
MUX 16
16 16
16

NOTES: A. See Table 4 for symbol descriptions.

B. For clarity, the data and program buses are shown as single buses although they include address and data bits.
C. See the TMS320F/C24x DSP Controllers Reference Guide: CPU and Instruction Set (literature number SPRU160) for CPU
instruction set information.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 35

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

240xA legend for the internal hardware

Table 4. Legend for the 240xA DSP CPU Internal Hardware

SYMBOL NAME DESCRIPTION
32-bit register that stores the results and provides input for subsequent CALU operations. Also includes shift
ACC Accumulator
and rotate capabilities
Auxiliary Register An unsigned, 16-bit arithmetic unit used to calculate indirect addresses using the auxiliary registers as inputs
ARAU
Arithmetic Unit and outputs
These 16-bit registers are used as pointers to anywhere within the data space address range. They are
AUX Auxiliary Registers
operated upon by the ARAU and are selected by the auxiliary register pointer (ARP). AR0 can also be used
REGS 0 −7
as an index value for AR updates of more than one and as a compare value to AR.
Register carry output from CALU. C is fed back into the CALU for extended arithmetic operation. The C bit
C Carry resides in status register 1 (ST1), and can be tested in conditional instructions. C is also used in accumulator
shifts and rotates.
32-bit-wide main arithmetic logic unit for the TMS320C2xx core. The CALU executes 32-bit operations in a
Central Arithmetic
CALU single machine cycle. CALU operates on data coming from ISCALE or PSCALE with data from ACC, and
Logic Unit
provides status results to PCTRL.
If the on-chip RAM configuration control bit (CNF) is set to 0, the reconfigurable data dual-access RAM
(DARAM) block B0 is mapped to data space; otherwise, B0 is mapped to program space. Blocks B1 and B2
DARAM Dual-Access RAM
are mapped to data memory space only, at addresses 0300−03FF and 0060−007F, respectively. Blocks 0
and 1 contain 256 words, while block 2 contains 32 words.
Data Memory The 9-bit DP register is concatenated with the seven least significant bits (LSBs) of an instruction word to
DP
Page Pointer form a direct memory address of 16 bits. DP can be modified by the LST and LDP instructions.
Global Memory
GREG specifies the size of the global data memory space. Since the global memory space is not used in
GREG Allocation
the 240xA devices, this register is reserved.
Register
Interrupt Mask
IMR IMR individually masks or enables the six core-level interrupts.
Register
Interrupt Flag The 6-bit IFR indicates that the TMS320Lx240xA has latched an interrupt from one of the six maskable
IFR
Register interrupts.
INT# Interrupt Traps A total of 32 interrupts by way of hardware and/or software are available.
Input Data-Scaling 16- to 32-bit barrel left-shifter. ISCALE shifts incoming 16-bit data 0 to16 positions left, relative to the 32-bit
ISCALE
Shifter output within the fetch cycle; therefore, no cycle overhead is required for input scaling operations.
16 × 16-bit multiplier to a 32-bit product. MPY executes multiplication in a single cycle. MPY operates either
MPY Multiplier
signed or unsigned 2s-complement arithmetic multiply.
MSTACK provides temporary storage for the address of the next instruction to be fetched when program
MSTACK Micro Stack
address-generation logic is used to generate sequential addresses in data space.
MUX Multiplexer Multiplexes buses to a common input
Next Program
NPAR NPAR holds the program address to be driven out on the PAB in the next cycle.
Address Register
Output 16- to 32-bit barrel left-shifter. OSCALE shifts the 32-bit accumulator output 0 to 7 bits left for quantization
OSCALE Data-Scaling management and outputs either the 16-bit high- or low-half of the shifted 32-bit data to the data-write data
Shifter bus (DWEB).
Program Address PAR holds the address currently being driven on PAB for as many cycles as it takes to complete all memory
PAR
Register operations scheduled for the current bus cycle.
PC increments the value from NPAR to provide sequential addresses for instruction-fetching and sequential
PC Program Counter
data-transfer operations.
Program
PCTRL PCTRL decodes instruction, manages the pipeline, stores status, and decodes conditional operations.
Controller

36 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

240xA legend for the internal hardware (continued)

Table 4. Legend for the 240xA DSP CPU Internal Hardware (Continued)
SYMBOL NAME DESCRIPTION
PREG Product Register 32-bit register holds results of 16 × 16 multiply
0-, 1-, or 4-bit left shift, or 6-bit right shift of multiplier product. The left-shift options are used to manage the
additional sign bits resulting from the 2s-complement multiply. The right-shift option is used to scale down
Product-Scaling
PSCALE the number to manage overflow of product accumulation in the CALU. PSCALE resides in the path from the
Shifter
32-bit product shifter and from either the CALU or the data-write data bus (DWEB), and requires no cycle
overhead.
STACK is a block of memory used for storing return addresses for subroutines and interrupt-service
STACK Stack
routines, or for storing data. The C2xx stack is 16 bits wide and 8 levels deep.
Temporary 16-bit register holds one of the operands for the multiply operations. TREG holds the dynamic shift count
TREG
Register for the LACT, ADDT, and SUBT instructions. TREG holds the dynamic bit position for the BITT instruction.

status and control registers

Two status registers, ST0 and ST1, contain the status of various conditions and modes. These registers can
be stored into data memory and loaded from data memory, thus allowing the status of the machine to be saved
and restored for subroutines.
The load status register (LST) instruction is used to write to ST0 and ST1. The store status register (SST)
instruction is used to read from ST0 and ST1 — except for the INTM bit, which is not affected by the LST
instruction. The individual bits of these registers can be set or cleared when using the SETC and CLRC
instructions. Figure 10 shows the organization of status registers ST0 and ST1, indicating all status bits
contained in each. Several bits in the status registers are reserved and are read as logic 1s. Table 5 lists status
register field definitions.

15 13 12 11 10 9 8 0
ST0 ARP OV OVM 1 INTM DP

15 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ST1 ARB CNF TC SXM C 1 1 1 1 XF 1 1 PM

Figure 10. Organization of Status Registers ST0 and ST1

Table 5. Status Register Field Definitions

FIELD FUNCTION
Auxiliary register pointer buffer. When the ARP is loaded into ST0, the old ARP value is copied to the ARB except during an LST
ARB
instruction. When the ARB is loaded by way of an LST #1 instruction, the same value is also copied to the ARP.
Auxiliary register (AR) pointer. ARP selects the AR to be used in indirect addressing. When the ARP is loaded, the old ARP value
ARP is copied to the ARB register. ARP can be modified by memory-reference instructions when using indirect addressing, and by the
LARP, MAR, and LST instructions. The ARP is also loaded with the same value as ARB when an LST #1 instruction is executed.
Carry bit. C is set to 1 if the result of an addition generates a carry, or reset to 0 if the result of a subtraction generates a borrow.
Otherwise, C is reset after an addition or set after a subtraction, except if the instruction is ADD or SUB with a 16-bit shift. In these
C cases, ADD can only set and SUB can only reset the carry bit, but cannot affect it otherwise. The single-bit shift and rotate
instructions also affect C, as well as the SETC, CLRC, and LST #1 instructions. Branch instructions have been provided to branch
on the status of C. C is set to 1 on a reset.
On-chip RAM configuration control bit. If CNF is set to 0, the reconfigurable data dual-access RAM blocks are mapped to data
CNF space; otherwise, they are mapped to program space. The CNF can be modified by the SETC CNF, CLRC CNF, and LST #1
instructions. RS sets the CNF to 0.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 37

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

status and control registers (continued)

Table 5. Status Register Field Definitions (Continued)
FIELD FUNCTION
Data memory page pointer. The 9-bit DP register is concatenated with the 7 LSBs of an instruction word to form a direct memory
DP
address of 16 bits. DP can be modified by the LST and LDP instructions.
Interrupt mode bit. When INTM is set to 0, all unmasked interrupts are enabled. When set to 1, all maskable interrupts are disabled.
INTM is set and reset by the SETC INTM and CLRC INTM instructions. RS also sets INTM. INTM has no effect on the unmaskable
INTM
RS and NMI interrupts. Note that INTM is unaffected by the LST instruction. This bit is set to 1 by reset. It is also set to 1 when
a maskable interrupt trap is taken.
Overflow flag bit. As a latched overflow signal, OV is set to 1 when overflow occurs in the arithmetic logic unit (ALU). Once an
OV
overflow occurs, the OV remains set until a reset, BCND/D on OV/NOV, or LST instruction clears OV.
Overflow mode bit. When OVM is set to 0, overflowed results overflow normally in the accumulator. When set to 1, the accumulator
OVM is set to either its most positive or negative value upon encountering an overflow. The SETC and CLRC instructions set and reset
this bit, respectively. LST can also be used to modify the OVM.
Product shift mode. If these two bits are 00, the multiplier’s 32-bit product is loaded into the ALU with no shift. If PM = 01, the PREG
output is left-shifted one place and loaded into the ALU, with the LSB zero-filled. If PM = 10, the PREG output is left-shifted by 4 bits
PM and loaded into the ALU, with the LSBs zero-filled. PM = 11 produces a right shift of 6 bits, sign-extended. Note that the PREG
contents remain unchanged. The shift takes place when transferring the contents of the PREG to the ALU. PM is loaded by the
SPM and LST #1 instructions. PM is cleared by RS.
Sign-extension mode bit. SXM = 1 produces sign extension on data as it is passed into the accumulator through the scaling shifter.
SXM = 0 suppresses sign extension. SXM does not affect the definitions of certain instructions; for example, the ADDS instruction
SXM
suppresses sign extension regardless of SXM. SXM is set by the SETC SXM instruction and reset by the CLRC SXM instruction
and can be loaded by the LST #1 instruction. SXM is set to 1 by reset.
Test/control flag bit. TC is affected by the BIT, BITT, CMPR, LST #1, and NORM instructions. TC is set to a 1 if a bit tested by BIT
or BITT is a 1, if a compare condition tested by CMPR exists between AR (ARP) and AR0, if the exclusive-OR function of the 2 most
TC
significant bits (MSBs) of the accumulator is true when tested by a NORM instruction. The conditional branch, call, and return
instructions can execute based on the condition of TC.
XF pin status bit. XF indicates the state of the XF pin, a general-purpose output pin. XF is set by the SETC XF instruction and reset
XF
by the CLRC XF instruction. XF is set to 1 by reset.

central processing unit

The TMS320x240xA central processing unit (CPU) contains a 16-bit scaling shifter, a 16 x 16-bit parallel
multiplier, a 32-bit central arithmetic logic unit (CALU), a 32-bit accumulator, and additional shifters at the
outputs of both the accumulator and the multiplier. This section describes the CPU components and their
functions. The functional block diagram shows the components of the CPU.
input scaling shifter
The TMS320x240xA provides a scaling shifter with a 16-bit input connected to the data bus and a 32-bit output
connected to the CALU. This shifter operates as part of the path of data coming from program or data space
to the CALU and requires no cycle overhead. It is used to align the 16-bit data coming from memory to the 32-bit
CALU. This is necessary for scaling arithmetic as well as aligning masks for logical operations.
The scaling shifter produces a left shift of 0 to 16 on the input data. The LSBs of the output are filled with zeros;
the MSBs can either be filled with zeros or sign-extended, depending upon the value of the SXM bit
(sign-extension mode) of status register ST1. The shift count is specified by a constant embedded in the
instruction word or by a value in TREG. The shift count in the instruction allows for specific scaling or alignment
operations specific to that point in the code. The TREG base shift allows the scaling factor to be adaptable to
the system’s performance.

38 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

multiplier
The TMS320x240xA devices use a 16 x 16-bit hardware multiplier that is capable of computing a signed or an
unsigned 32-bit product in a single machine cycle. All multiply instructions, except the MPYU (multiply unsigned)
instruction, perform a signed multiply operation. That is, two numbers being multiplied are treated as
2s-complement numbers, and the result is a 32-bit 2s-complement number. There are two registers associated
with the multiplier, as follow:
D 16-bit temporary register (TREG) that holds one of the operands for the multiplier
D 32-bit product register (PREG) that holds the product
Four product-shift modes (PM) are available at the PREG output (PSCALE). These shift modes are useful for
performing multiply/accumulate operations, performing fractional arithmetic, or justifying fractional products.
The PM field of status register ST1 specifies the PM shift mode, as shown in Table 6.

Table 6. PSCALE Product-Shift Modes

PM SHIFT DESCRIPTION
00 No shift Product feed to CALU or data bus with no shift
01 Left 1 Removes the extra sign bit generated in a 2s-complement multiply to produce a Q31 product
Removes the extra 4 sign bits generated in a 16x13 2s-complement multiply to a produce a Q31 product when
10 Left 4
using the multiply-by-a-13-bit constant
11 Right 6 Scales the product to allow up to 128 product accumulation without the possibility of accumulator overflow

The product can be shifted one bit to compensate for the extra sign bit gained in multiplying two 16-bit
2s-complement numbers (MPY instruction). A four-bit shift is used in conjunction with the MPY instruction with
a short immediate value (13 bits or less) to eliminate the four extra sign bits gained in multiplying a 16-bit number
by a 13-bit number. Finally, the output of PREG can be right-shifted 6 bits to enable the execution of up to
128 consecutive multiply/accumulates without the possibility of overflow.
The LT (load TREG) instruction normally loads TREG to provide one operand (from the data bus), and the MPY
(multiply) instruction provides the second operand (also from the data bus). A multiplication also can be
performed with a 13-bit immediate operand when using the MPY instruction. Then, a product is obtained every
two cycles. When the code is executing multiple multiplies and product sums, the CPU supports the pipelining
of the TREG load operations with CALU operations using the previous product. The pipeline operations that
run in parallel with loading the TREG include: load ACC with PREG (LTP); add PREG to ACC (LTA); add PREG
to ACC and shift TREG input data (DMOV) to next address in data memory (LTD); and subtract PREG from ACC
(LTS).
Two multiply/accumulate instructions (MAC and MACD) fully utilize the computational bandwidth of the
multiplier, allowing both operands to be processed simultaneously. The data for these operations can be
transferred to the multiplier each cycle by way of the program and data buses. This facilitates single-cycle
multiply/accumulates when used with the repeat (RPT) instruction. In these instructions, the coefficient
addresses are generated by program address generation (PAGEN) logic, while the data addresses are
generated by data address generation (DAGEN) logic. This allows the repeated instruction to access the values
from the coefficient table sequentially and step through the data in any of the indirect addressing modes.
The MACD instruction, when repeated, supports filter constructs (weighted running averages) so that as the
sum-of-products is executed, the sample data is shifted in memory to make room for the next sample and to
throw away the oldest sample.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 39

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

multiplier (continued)
The MPYU instruction performs an unsigned multiplication, which greatly facilitates extended-precision
arithmetic operations. The unsigned contents of TREG are multiplied by the unsigned contents of the addressed
data memory location, with the result placed in PREG. This process allows the operands of greater than 16 bits
to be broken down into 16-bit words and processed separately to generate products of greater than 32 bits. The
SQRA (square / add) and SQRS (square/subtract) instructions pass the same value to both inputs of the
multiplier for squaring a data memory value.
After the multiplication of two 16-bit numbers, the 32-bit product is loaded into the 32-bit product register
(PREG). The product from PREG can be transferred to the CALU or to data memory by way of the SPH (store
product high) and SPL (store product low) instructions. Note: the transfer of PREG to either the CALU or data
bus passes through the PSCALE shifter, and therefore is affected by the product shift mode defined by PM. This
is important when saving PREG in an interrupt-service-routine context save as the PSCALE shift effects cannot
be modeled in the restore operation. PREG can be cleared by executing the MPY #0 instruction. The product
register can be restored by loading the saved low half into TREG and executing a MPY #1 instruction. The high
half, then, is loaded using the LPH instruction.
central arithmetic logic unit
The TMS320x240xA central arithmetic logic unit (CALU) implements a wide range of arithmetic and logical
functions, the majority of which execute in a single clock cycle. This ALU is referred to as central to differentiate
it from a second ALU used for indirect-address generation called the auxiliary register arithmetic unit (ARAU).
Once an operation is performed in the CALU, the result is transferred to the accumulator (ACC) where additional
operations, such as shifting, can occur. Data that is input to the CALU can be scaled by ISCALE when coming
from one of the data buses (DRDB or PRDB) or scaled by PSCALE when coming from the multiplier.
The CALU is a general-purpose ALU that operates on 16-bit words taken from data memory or derived from
immediate instructions. In addition to the usual arithmetic instructions, the CALU can perform Boolean
operations, facilitating the bit-manipulation ability required for a high-speed controller. One input to the CALU
is always provided from the accumulator, and the other input can be provided from the product register (PREG)
of the multiplier or the output of the scaling shifter (that has been read from data memory or from the ACC). After
the CALU has performed the arithmetic or logical operation, the result is stored in the accumulator.
The TMS320x240xA devices support floating-point operations for applications requiring a large dynamic range.
The NORM (normalization) instruction is used to normalize fixed-point numbers contained in the accumulator
by performing left shifts. The four bits of the TREG define a variable shift through the scaling shifter for the
LACT/ADDT/SUBT (load/add to/subtract from accumulator with shift specified by TREG) instructions. These
instructions are useful in floating-point arithmetic where a number needs to be denormalized — that is,
floating-point to fixed-point conversion. They are also useful in the execution of an automatic gain control (AGC)
going into a filter. The BITT (bit test) instruction provides testing of a single bit of a word in data memory based
on the value contained in the four LSBs of TREG.
The CALU overflow saturation mode can be enabled/disabled by setting/resetting the OVM bit of ST0. When
the CALU is in the overflow saturation mode and an overflow occurs, the overflow flag is set and the accumulator
is loaded with either the most positive or the most negative value representable in the accumulator, depending
on the direction of the overflow. The value of the accumulator at saturation is 07FFFFFFFh (positive) or
080000000h (negative). If the OVM (overflow mode) status register bit is reset and an overflow occurs, the
overflowed results are loaded into the accumulator with modification. (Note that logical operations cannot result
in overflow.)
The CALU can execute a variety of branch instructions that depend on the status of the CALU and the
accumulator. These instructions can be executed conditionally based on any meaningful combination of these
status bits. For overflow management, these conditions include OV (branch on overflow) and EQ (branch on
accumulator equal to zero). In addition, the BACC (branch to address in accumulator) instruction provides the
ability to branch to an address specified by the accumulator (computed goto). Bit test instructions (BIT and
BITT), which do not affect the accumulator, allow the testing of a specified bit of a word in data memory.

40 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

central arithmetic logic unit (continued)

The CALU also has an associated carry bit that is set or reset depending on various operations within the device.
The carry bit allows more efficient computation of extended-precision products and additions or subtractions.
It is also useful in overflow management. The carry bit is affected by most arithmetic instructions as well as the
single-bit shift and rotate instructions. It is not affected by loading the accumulator, logical operations, or other
such non-arithmetic or control instructions.
The ADDC (add to accumulator with carry) and SUBB (subtract from accumulator with borrow) instructions use
the previous value of carry in their addition/subtraction operation.
The one exception to the operation of the carry bit is in the use of ADD with a shift count of 16 (add to high
accumulator) and SUB with a shift count of 16 (subtract from high accumulator) instructions. This case of the
ADD instruction can set the carry bit only if a carry is generated, and this case of the SUB instruction can reset
the carry bit only if a borrow is generated; otherwise, neither instruction affects it.
Two conditional operands, C and NC, are provided for branching, calling, returning, and conditionally executing,
based upon the status of the carry bit. The SETC, CLRC, and LST #1 instructions also can be used to load the
carry bit. The carry bit is set to one on a hardware reset.
accumulator
The 32-bit accumulator is the registered output of the CALU. It can be split into two 16-bit segments for storage
in data memory. Shifters at the output of the accumulator provide a left shift of 0 to 7 places. This shift is
performed while the data is being transferred to the data bus for storage. The contents of the accumulator
remain unchanged. When the postscaling shifter is used on the high word of the accumulator (bits 16−31), the
MSBs are lost and the LSBs are filled with bits shifted in from the low word (bits 0−15). When the postscaling
shifter is used on the low word, the LSBs are zero-filled.
The SFL and SFR (in-place one-bit shift to the left / right) instructions and the ROL and ROR (rotate to the
left/right) instructions implement shifting or rotating of the contents of the accumulator through the carry bit. The
SXM bit affects the definition of the SFR (shift accumulator right) instruction. When SXM = 1, SFR performs an
arithmetic right shift, maintaining the sign of the accumulator data. When SXM = 0, SFR performs a logical shift,
shifting out the LSBs and shifting in a zero for the MSB. The SFL (shift accumulator left) instruction is not affected
by the SXM bit and behaves the same in both cases, shifting out the MSB and shifting in a zero. Repeat (RPT)
instructions can be used with the shift and rotate instructions for multiple-bit shifts.
auxiliary registers and auxiliary-register arithmetic unit (ARAU)
The 240xA provides a register file containing eight auxiliary registers (AR0 −AR7). The auxiliary registers are
used for indirect addressing of the data memory or for temporary data storage. Indirect auxiliary-register
addressing allows placement of the data memory address of an instruction operand into one of the auxiliary
registers. These registers are referenced with a 3-bit auxiliary register pointer (ARP) that is loaded with a value
from 0 through 7, designating AR0 through AR7, respectively. The auxiliary registers and the ARP can be loaded
from data memory, the ACC, the product register, or by an immediate operand defined in the instruction. The
contents of these registers also can be stored in data memory or used as inputs to the CALU.
The auxiliary register file (AR0−AR7) is connected to the ARAU. The ARAU can autoindex the current auxiliary
register while the data memory location is being addressed. Indexing either by ±1 or by the contents of the AR0
register can be performed. As a result, accessing tables of information does not require the CALU for address
manipulation; therefore, the CALU is free for other operations in parallel.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 41

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

internal memory
The TMS320x240xA devices are configured with the following memory modules:
D Dual-access random-access memory (DARAM)
D Single-access random-access memory (SARAM)
D Flash
D ROM
D Boot ROM
dual-access RAM (DARAM)
There are 544 words × 16 bits of DARAM on the 240xA devices. The 240xA DARAM allows writes to and reads
from the RAM in the same cycle. The DARAM is configured in three blocks: block 0 (B0), block 1 (B1), and
block 2 (B2). Block 1 contains 256 words and Block 2 contains 32 words, and both blocks are located only in
data memory space. Block 0 contains 256 words, and can be configured to reside in either data or program
memory space. The SETC CNF (configure B0 as program memory) and CLRC CNF (configure B0 as data
memory) instructions allow dynamic configuration of the memory maps through software.
When using on-chip RAM, the 240xA runs at full speed with no wait states. The ability of the DARAM to allow
two accesses to be performed in one cycle, coupled with the parallel nature of the 240xA architecture, enables
the device to perform three concurrent memory accesses in any given machine cycle. Externally, the READY
line or on-chip software wait-state generator can be used to interface the 2407A to slower, less expensive
external memory.
single-access RAM (SARAM)
There are 2K words × 16 bits of SARAM on some of the 240xA devices.† The PON and DON bits select SARAM
(2K) mapping in program space, data space, or both. See Table 19 for details on the SCSR2 register and the
PON and DON bits. At reset, these bits are 11, and the on-chip SARAM is mapped in both the program and data
spaces. The SARAM (starting at 8000h in program memory) is accessible in external memory space (for 2407A
only), if the on-chip SARAM is not enabled.
flash EEPROM
Flash EEPROM provides an attractive alternative to masked program ROM. Like ROM, Flash is nonvolatile.
However, it has the advantage of “in-target” reprogrammability. The LF2407A incorporates one 32K  16-bit
Flash EEPROM module in program space. The Flash module has multiple sectors that can be individually
protected while erasing or programming. The sector size is non-uniform and partitioned as 4K/12K/12K/4K
sectors.
Unlike most discrete Flash memory, the LF240xA Flash does not require a dedicated state machine, because
the algorithms for programming and erasing the Flash are executed by the DSP core. This enables several
advantages, including: reduced chip size and sophisticated, adaptive algorithms. For production programming,
the IEEE Standard 1149.1‡ (JTAG) scan port provides easy access to the on-chip RAM for downloading the
algorithms and Flash code. This Flash requires 5 V for programming (at VCCP pin only) the array. The Flash runs
at zero wait state while the device is powered at 3.3 V.
ROM
The LC240xA devices contain mask-programmable ROM located in program memory space. Customers can
arrange to have this ROM programmed with contents unique to any particular application. See Table 1 for the
ROM memory capacity of each LC240xA device.

† See Table 1 for device-specific features.

‡ IEEE Standard 1149.1−1990, IEEE Standard Test Access Port.

42 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

boot ROM (LF240xA only)

Boot ROM is a 256-word ROM memory-mapped in program space 0000−00FF. This ROM will be enabled if the
BOOT_EN pin is low during reset. The BOOT_EN bit (bit 3 of the SCSR2 register) will be set to 0 if the BOOT_EN
pin is low at reset. Boot ROM can also be enabled by writing 0 to the SCSR2.3 bit and disabled by writing 1 to
this bit.
The boot ROM has a generic bootloader to transfer code through SCI or SPI ports. The incoming code should
disable the BOOT_ROM bit by writing 1 to bit 3 of the SCSR2 register, or else, the whole Flash array will not
be enabled.
The boot ROM code sets the PLL to x2 or x4 option based on the condition of the SCITXD pin during reset. The
SCITXD pin should be pulled high/low to select the PLL multiplication factor. The choices made are as follows:
D If the SCITXD pin is pulled low, the PLL multiplier is set to 2.
D If the SCITXD pin is pulled high, the PLL multiplier is set to 4. (Default)
D If the SCITXD pin is not driven at reset, the internal pullup selects the default multiplier of 4.
Care should be taken such that a combination of CLKIN and the PLL multiplication factor should not result in
a CPU clock speed of greater than 40 MHz, the maximum rated speed.
Furthermore, when the bootloader is used, only specific values of CLKIN would result in a baud-lock for the SCI.
See the TMS320LF/LC240xA DSP Controllers Reference Guide: System and Peripherals (literature number
SPRU357) for more details about the bootloader operation.
flash/ROM security
240xA devices incorporate a security feature that prevents external access to program memory. This feature
is useful in preventing unauthorized duplication of proprietary code.
If access to Flash/ROM contents are desired for debugging purposes, two actions need to be taken:
1. A “dummy” read of locations 40h, 41h, 42h and 43h (of program memory space) is necessary. The word
“dummy” indicates that the destination address of this read is insignificant.
NOTE: Step 2 is not required if 40h−43h contain 0000 0000 0000 0000h or FFFF FFFF FFFF FFFFh.
2. A 64-bit password (split as four 16-bit words) must be written to the data-memory locations 77F0h, 77F1h,
77F2h, and 77F3h. The four 16-bit words written to these locations must match the four words stored in 40h,
41h, 42h, and 43h (of program memory space), respectively. The device becomes “unsecured” one cycle
after the last instruction that unsecures the part.

Code Security Module Disclaimer

The Code Security Module (“CSM”) included on this device was designed to password
protect the data stored in the associated memory (either ROM or Flash) and is warranted
by Texas Instruments (TI), in accordance with its standard terms and conditions, to
conform to TI’s published specifications for the warranty period applicable for this device.
TI DOES NOT, HOWEVER, WARRANT OR REPRESENT THAT THE CSM CANNOT BE
COMPROMISED OR BREACHED OR THAT THE DATA STORED IN THE
ASSOCIATED MEMORY CANNOT BE ACCESSED THROUGH OTHER MEANS.
MOREOVER, EXCEPT AS SET FORTH ABOVE, TI MAKES NO WARRANTIES OR
REPRESENTATIONS CONCERNING THE CSM OR OPERATION OF THIS DEVICE,
INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 43

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

IN NO EVENT SHALL TI BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL,

INDIRECT, INCIDENTAL, OR PUNITIVE DAMAGES, HOWEVER CAUSED, ARISING
IN ANY WAY OUT OF YOUR USE OF THE CSM OR THIS DEVICE, WHETHER OR NOT
TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED
DAMAGES INCLUDE, BUT ARE NOT LIMITED TO LOSS OF DATA, LOSS OF
GOODWILL, LOSS OF USE OR INTERRUPTION OF BUSINESS OR OTHER
ECONOMIC LOSS.

44 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PERIPHERALS
The integrated peripherals of the TMS320x240xA are described in the following subsections:
D Two event-manager modules (EVA, EVB)
D Enhanced analog-to-digital converter (ADC) module
D Controller area network (CAN) module
D Serial communications interface (SCI) module
D Serial peripheral interface (SPI) module
D PLL-based clock module
D Digital I/O and shared pin functions
D External memory interfaces (LF2407A only)
D Watchdog (WD) timer module

event manager modules (EVA, EVB)

The event-manager modules include general-purpose (GP) timers, full-compare/PWM units, capture units, and
quadrature-encoder pulse (QEP) circuits. EVA and EVB timers, compare units, and capture units function
identically. However, timer/unit names differ for EVA and EVB. Table 7 shows the module and signal names
used. Table 7 shows the features and functionality available for the event-manager modules and highlights EVA
nomenclature.
Event managers A and B have identical peripheral register sets with EVA starting at 7400h and EVB starting
at 7500h. The paragraphs in this section describe the function of GP timers, compare units, capture units, and
QEPs using EVA nomenclature. These paragraphs are applicable to EVB with regard to function—however,
module/signal names would differ.

Table 7. Module and Signal Names for EVA and EVB

EVA EVB
EVENT MANAGER MODULES
MODULE SIGNAL MODULE SIGNAL
Timer 1 T1PWM/T1CMP Timer 3 T3PWM/T3CMP
GP Timers
Timer 2 T2PWM/T2CMP Timer 4 T4PWM/T4CMP
Compare 1 PWM1/2 Compare 4 PWM7/8
Compare Units Compare 2 PWM3/4 Compare 5 PWM9/10
Compare 3 PWM5/6 Compare 6 PWM11/12
Capture 1 CAP1 Capture 4 CAP4
Capture Units Capture 2 CAP2 Capture 5 CAP5
Capture 3 CAP3 Capture 6 CAP6
QEP1 QEP1 QEP3 QEP3
QEP
QEP2 QEP2 QEP4 QEP4
Direction TDIRA Direction TDIRB
External Inputs
External Clock TCLKINA External Clock TCLKINB

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 45

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

event manager modules (EVA, EVB) (continued)

240xA DSP Core

Data Bus ADDR Bus Reset INT2,3,4 Clock

16 3
16
16
EV Control Registers ADC Start of
and Control Logic Conversion

16 GP Timer 1 Output T1PWM/

Compare Logic T1CMP

TDIRA†
16 TCLKINA
GP Timer 1
Prescaler CLKOUT
(Internal)

16
T1CON[4,5] T1CON[8,9,10]

SVPWM PWM1
16 Full-Compare 3 State 3 Deadband 3 Output
Units Machine Units Logic
PWM6

16 GP Timer 2 Output T2PWM/

Compare Logic T2CMP

TCLKINA
16 Prescaler
GP Timer 2 CLKOUT
(Internal)

T2CON[4,5] T2CON[8,9,10]
16

TDIRA
16

DIR Clock

QEP CAPCONA[14,13]
MUX Circuit
2
2 CAP1/QEP1
2
16 CAP2/QEP2
Capture Units
CAP3
16

† 2402A devices do not support external direction control. TDIR is not available.

Figure 11. Event Manager A Block Diagram

46 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

general-purpose (GP) timers

There are two GP timers. The GP timer x (x = 1 or 2 for EVA; x = 3 or 4 for EVB) includes:
D A 16-bit timer, up-/down-counter, TxCNT, for reads or writes
D A 16-bit timer-compare register, TxCMPR (double-buffered with shadow register), for reads or writes
D A 16-bit timer-period register, TxPR (double-buffered with shadow register), for reads or writes
D A 16-bit timer-control register,TxCON, for reads or writes
D Selectable internal or external input clocks
D A programmable prescaler for internal or external clock inputs
D Control and interrupt logic, for four maskable interrupts: underflow, overflow, timer compare, and period
interrupts
D A selectable direction input pin (TDIRx) (to count up or down when directional up- / down-count mode is
selected)
The GP timers can be operated independently or synchronized with each other. The compare register
associated with each GP timer can be used for compare function and PWM-waveform generation. There are
three continuous modes of operations for each GP timer in up- or up / down-counting operations. Internal or
external input clocks with programmable prescaler are used for each GP timer. GP timers also provide the time
base for the other event-manager submodules: GP timer 1 for all the compares and PWM circuits, GP timer 2/1
for the capture units and the quadrature-pulse counting operations. Double-buffering of the period and compare
registers allows programmable change of the timer (PWM) period and the compare/PWM pulse width as
needed.
full-compare units
There are three full-compare units on each event manager. These compare units use GP timer1 as the time
base and generate six outputs for compare and PWM-waveform generation using programmable deadband
circuit. The state of each of the six outputs is configured independently. The compare registers of the compare
units are double-buffered, allowing programmable change of the compare/PWM pulse widths as needed.
programmable deadband generator
The deadband generator circuit includes three 8-bit counters and an 8-bit compare register. Desired deadband
values (from 0 to 16 µs) can be programmed into the compare register for the outputs of the three compare units.
The deadband generation can be enabled/disabled for each compare unit output individually. The
deadband-generator circuit produces two outputs (with or without deadband zone) for each compare unit output
signal. The output states of the deadband generator are configurable and changeable as needed by way of the
double-buffered ACTR register.
PWM waveform generation
Up to eight PWM waveforms (outputs) can be generated simultaneously by each event manager: three
independent pairs (six outputs) by the three full-compare units with programmable deadbands, and two
independent PWMs by the GP-timer compares.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 47

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PWM characteristics
Characteristics of the PWMs are as follows:
D 16-bit registers
D Programmable deadband for the PWM output pairs, from 0 to 12 µs
D Minimum deadband width of 25 ns
D Change of the PWM carrier frequency for PWM frequency wobbling as needed
D Change of the PWM pulse widths within and after each PWM period as needed
D External-maskable power and drive-protection interrupts
D Pulse-pattern-generator circuit, for programmable generation of asymmetric, symmetric, and four-space
vector PWM waveforms
D Minimized CPU overhead using auto-reload of the compare and period registers
D The PWM pins are driven to a high-impedance state when the PDPINTx pin is driven low and after PDPINTx
signal qualification. The PDPINTx pin (after qualification) is reflected in bit 8 of the COMCONx register.
− PDPINTA pin status is reflected in bit 8 of COMCONA register.
− PDPINTB pin status is reflected in bit 8 of COMCONB register.
capture unit
The capture unit provides a logging function for different events or transitions. The values of the selected GP
timer counter is captured and stored in the two-level-deep FIFO stacks when selected transitions are detected
on capture input pins, CAPx (x = 1, 2, or 3 for EVA; and x = 4, 5, or 6 for EVB). The capture unit consists of three
capture circuits.
Capture units include the following features:
D One 16-bit capture control register, CAPCONx (R/W)
D One 16-bit capture FIFO status register, CAPFIFOx
D Selection of GP timer 1/2 (for EVA) or 3/4 (for EVB) as the time base
D Three 16-bit 2-level-deep FIFO stacks, one for each capture unit
D Three capture input pins (CAP1/2/3 for EVA, CAP4/5/6 for EVB)—one input pin per capture unit. [All inputs
are synchronized with the device (CPU) clock. In order for a transition to be captured, the input must hold
at its current level to meet two rising edges of the device clock. The input pins CAP1/2 and CAP4/5 can also
be used as QEP inputs to the QEP circuit.]
D User-specified transition (rising edge, falling edge, or both edges) detection
D Three maskable interrupt flags, one for each capture unit
quadrature-encoder pulse (QEP) circuit
Two capture inputs (CAP1 and CAP2 for EVA; CAP4 and CAP5 for EVB) can be used to interface the on-chip
QEP circuit with a quadrature encoder pulse. Full synchronization of these inputs is performed on-chip.
Direction or leading-quadrature pulse sequence is detected, and GP timer 2/4 is incremented or decremented
by the rising and falling edges of the two input signals (four times the frequency of either input pulse).

48 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

input qualifier circuitry

An input-qualifier circuitry qualifies the input signal to the CAP1−6, QEP1−4, XINT1/2, ADCSOC and
PDPINTA/B pins in the 240xA devices. (The I/O functions of these pins do not use the input-qualifier circuitry).
The state of the internal input signal will change only after the pin is high/low for 6(12) clock edges. This ensures
that a glitch smaller than 5(11) CLKOUT cycles wide will not change the internal pin input state. The user must
hold the pin high/low for 6(12) cycles to ensure the device will see the level change. Bit 6 of the SCSR2 register
controls whether 6 clock edges (bit 6 = 0) or 12 clock edges (bit 6 = 1) are used to block 5- or 11-cycle glitches.
On the LC2402A, input qualification is for the CAP1, CAP2, CAP3, PDPINTA, and XINT2/ADCSOC pins.

enhanced analog-to-digital converter (ADC) module

A simplified functional block diagram of the ADC module is shown in Figure 12. The ADC module consists of
a 10-bit ADC with a built-in sample-and-hold (S / H) circuit. Functions of the ADC module include:
D 10-bit ADC core with built-in S/H
D 16-channel, MUXed inputs
D Autosequencing capability provides up to 16 “autoconversions” in a single session. Each conversion can
be programmed to select any 1 of 16 input channels
D Sequencer can be operated as two independent 8-state sequencers or as one large 16-state sequencer
(i.e., two cascaded 8-state sequencers)
D Sixteen result registers (individually addressable) to store conversion values
− The digital value of the input analog voltage is derived by:
Digital Value = 0 when input ≤ VREFLO

Input Analog Voltage * V REFLO

Digital Value + 1024 when VREFLO < input < VREFHI
V REFHI * V REFLO
Digital Value = 1023 when input ≥ VREFHI
Note: All fractional values are truncated.

D Multiple triggers as sources for the start-of-conversion (SOC) sequence

− S/W − software immediate start
− EVA − Event manager A (multiple event sources within EVA)
− EVB − Event manager B (multiple event sources within EVB)
− Ext − External pin (ADCSOC)
D Flexible interrupt control allows interrupt request on every end-of-sequence (EOS) or every other EOS
D Sequencer can operate in “start/stop” mode, allowing multiple “time-sequenced triggers” to synchronize
conversions
D EVA and EVB triggers can operate independently in dual-sequencer mode
D Sample-and-hold (S/H) acquisition time window has separate prescale control
NOTE: The calibration and self-test features are not present in 240xA devices.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 49

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

enhanced analog-to-digital converter (ADC) module (continued)

The ADC module in the 240xA has been enhanced to provide flexible interface to event managers A and B. The
ADC interface is built around a fast, 10-bit ADC module with a total minimum conversion time of 375 ns
(S/H + conversion). The ADC module has 16 channels, configurable as two independent 8-channel modules
to service event managers A and B. The two independent 8-channel modules can be cascaded to form a
16-channel module. Although there are multiple input channels and two sequencers, there is only one converter
in the ADC module. Figure 12 shows the block diagram of the 240xA ADC module.
The two 8-channel modules have the capability to autosequence a series of conversions, each module has the
choice of selecting any one of the respective eight channels available through an analog MUX. In the cascaded
mode, the autosequencer functions as a single 16-channel sequencer. On each sequencer, once the
conversion is complete, the selected channel value is stored in its respective RESULT register. Autosequencing
allows the system to convert the same channel multiple times, allowing the user to perform oversampling
algorithms. This gives increased resolution over traditional single-sampled conversion results.

Analog MUX Result Registers

Result Reg 0 70A8h

ADCIN00
Result Reg 1

10-Bit
ADCIN07
ADC Result Reg 7 70AFh
Module Result Reg 8 70B0h
ADCIN08 (375 ns MIN)

ADCIN15
Result Reg 15 70B7h

ADC Control Registers

S/W
S/W
EVA SOC Sequencer 1 Sequencer 2 SOC
EVB
ADCSOC

Figure 12. Block Diagram of the 240xA ADC Module

To obtain the specified accuracy of the ADC, proper board layout is critical. To the best extent possible, traces
leading to the ADCINn pins should not run in close proximity to the digital signal paths. This is to minimize
switching noise on the digital lines from getting coupled to the ADC inputs. Furthermore, proper isolation
techniques must be used to isolate the ADC module power pins (such as VCCA, VREFHI, and VSSA) from the
digital supply. Unused ADC inputs should be connected to analog ground for improved accuracy and ESD
protection.

50 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

controller area network (CAN) module

The CAN module is a full-CAN controller designed as a 16-bit peripheral module and supports the following
features:
D CAN specification 2.0B (active)
− Standard data and remote frames
− Extended data and remote frames
D Six mailboxes for objects of 0- to 8-byte data length
− Two receive mailboxes, two transmit mailboxes
− Two configurable transmit/receive mailboxes
D Local acceptance mask registers for mailboxes 0 and 1 and mailboxes 2 and 3
D Configurable standard or extended message identifier
D Programmable bit rate
D Programmable interrupt scheme
D Readable error counters
D Self-test mode
− In this mode, the CAN module operates in a loop-back fashion, receiving its own transmitted message.
The CAN module is a 16-bit peripheral. The accesses are split into the control/status-registers accesses and
the mailbox-RAM accesses.
CAN peripheral registers: The CPU can access the CAN peripheral registers only using 16-bit write accesses.
The CAN peripheral always presents full 16-bit data to the CPU bus during read cycles.
CAN controller architecture
Figure 13 shows the basic architecture of the CAN controller through this block diagram of the CAN Peripherals.

CAN Module

Control/Status Registers Transmit Buffer

Interrupt Logic
CANTX

Control Bus CAN

CAN
CPU Interface/
CPU Core Transceiver
Memory Management Unit

CANRX

Temporary Receive Buffer

R mailbox 0
mailbox 1 Data ID
R
T/R mailbox 2
T/R mailbox 3
T mailbox 4
T mailbox 5 Matchid
Control Logic Acceptance Filter
RAM 48x16

Figure 13. CAN Module Block Diagram

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 51

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

controller area network (CAN) module (continued)

The mailboxes are situated in one 48-word x 16-bit RAM. It can be written to or read by the CPU or the CAN.
The CAN write or read access, as well as the CPU read access, needs one clock cycle. The CPU write access
needs two clock cycles. In these two clock cycles, the CAN performs a read-modify-write cycle and, therefore,
inserts one wait state for the CPU.
Address bit 0 of the address bus used when accessing the RAM decides if the lower (0) or the higher (1)
16-bit word of the 32-bit word is taken. The RAM location is determined by the upper bits 5 to 1 of the address
bus.
Table 8. 3.3-V CAN Transceivers for the TMS320Lx240xA DSPs
INTEGRATED
PART NUMBER LOW-POWER MODE Vref PIN TA MARKED AS†
SLOPE CONTROL
SN65HVD230 370 µA standby mode Yes Yes VP230
SN65HVD231 40 nA sleep mode Yes Yes −40°C
40 C to 85
85°C
C VP231
SN65HVD232 No standby or sleep mode No No VP232
† This is the nomenclature printed on the device, since the footprint is too small to accommodate the entire part number.

CAN interrupt logic

There are two interrupt requests from the CAN module to the peripheral interrupt expansion (PIE) controller:
the mailbox interrupt and the error interrupt. Both interrupts can assert either a high-priority request or a
low-priority request to the CPU. Since CAN mailboxes can generate multiple interrupts, the software should
read the CAN_IFR register for every interrupt and prioritize the interrupt service, or else, these multiple
interrupts will not be recognized by the CPU and PIE hardware logic. Each interrupt routine should service all
the interrupt bits that are set and clear them after service.

52 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

serial communications interface (SCI) module

The 240xA devices include a serial communications interface (SCI) module. The SCI module supports digital
communications between the CPU and other asynchronous peripherals that use the standard
non-return-to-zero (NRZ) format. The SCI receiver and transmitter are double-buffered, and each has its own
separate enable and interrupt bits. Both can be operated independently or simultaneously in the full-duplex
mode. To ensure data integrity, the SCI checks received data for break detection, parity, overrun, and framing
errors. The bit rate is programmable to over 65 000 different speeds through a 16-bit baud-select register.
Features of the SCI module include:
D Two external pins:
− SCITXD: SCI transmit-output pin
− SCIRXD: SCI receive-input pin
NOTE: Both pins can be used as GPIO if not used for SCI.

D Baud rate programmable to 64K different rates

− Up to 2500 Kbps at 40-MHz CPUCLK
D Data-word format
− One start bit
− Data-word length programmable from one to eight bits
− Optional even/odd/no parity bit
− One or two stop bits
D Four error-detection flags: parity, overrun, framing, and break detection
D Two wake-up multiprocessor modes: idle-line and address bit
D Half- or full-duplex operation
D Double-buffered receive and transmit functions
D Transmitter and receiver operations can be accomplished through interrupt-driven or polled algorithms with
status flags.
− Transmitter: TXRDY flag (transmitter-buffer register is ready to receive another character) and
TX EMPTY flag (transmitter-shift register is empty)
− Receiver: RXRDY flag (receiver-buffer register is ready to receive another character), BRKDT flag
(break condition occurred), and RX ERROR flag (monitoring four interrupt conditions)
D Separate enable bits for transmitter and receiver interrupts (except BRKDT)
D NRZ (non-return-to-zero) format
D Ten SCI module control registers located in the control register frame beginning at address 7050h
NOTE: All registers in this module are 8-bit registers that are connected to the 16-bit peripheral bus. When a register is accessed, the
register data is in the lower byte (7 −0), and the upper byte (15 −8) is read as zeros. Writing to the upper byte has no effect.

Figure 14 shows the SCI module block diagram.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 53

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

serial communications interface (SCI) module (continued)

SCI TX Interrupt
TXWAKE SCITXBUF.7−0
TXRDY TX INT ENA
Frame Format and Mode SCICTL1.3 Transmitter-Data TXINT
SCICTL2.7 External
Buffer Register Connections
Parity SCICTL2.0
TX EMPTY
Even/Odd Enable 8
SCICTL2.6
SCICCR.6 SCICCR.5 WUT
TXSHF TXENA
SCITXD
Register SCITXD
SCICTL1.1
SCIHBAUD. 15 −8
SCI Priority Level
Baud Rate 1
MSbyte Level 5 Int.
Register 0
Internal Level 1 Int.
Clock SCI TX
SCILBAUD. 7 −0 Priority

Baud Rate SCIPRI.6

LSbyte 1
Register Level 5 Int.
0
Level 1 Int.
SCI RX
Priority
SCIPRI.5

RXSHF SCIRXD
Register SCIRXD
RXWAKE
SCIRXST.1

RX ERR INT ENA RXENA

SCICTL1.6 SCICTL1.0
8 SCI RX Interrupt
RXRDY RX/BK INT ENA
Receiver-Data
SCIRXST.6
Buffer
RX Error
RXINT

Register SCICTL2.1
BRKDT
SCIRXST.7 SCIRXST.4 −2 SCIRXBUF.7−0 SCIRXST.5

RX Error FE OE PE

Figure 14. Serial Communications Interface (SCI) Module Block Diagram

54 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

serial peripheral interface (SPI) module

Some 240xA devices include the four-pin serial peripheral interface (SPI) module. The SPI is a high-speed,
synchronous serial I/O port that allows a serial bit stream of programmed length (one to sixteen bits) to be shifted
into and out of the device at a programmable bit-transfer rate. Normally, the SPI is used for communications
between the DSP controller and external peripherals or another processor. Typical applications include external
I/O or peripheral expansion through devices such as shift registers, display drivers, and ADCs. Multidevice
communications are supported by the master/slave operation of the SPI.
The SPI module features include:
D Four external pins:
− SPISOMI: SPI slave-output/master-input pin
− SPISIMO: SPI slave-input/master-output pin
− SPISTE: SPI slave transmit-enable pin
− SPICLK: SPI serial-clock pin
NOTE: All four pins can be used as GPIO, if the SPI module is not used.

D Two operational modes: master and slave

D Baud rate: 125 different programmable rates / 10 Mbps at 40-MHz CPUCLK
D Data word length: one to sixteen data bits
D Four clocking schemes (controlled by clock polarity and clock phase bits) include:
− Falling edge without phase delay: SPICLK active high. SPI transmits data on the falling edge of the
SPICLK signal and receives data on the rising edge of the SPICLK signal.
− Falling edge with phase delay: SPICLK active high. SPI transmits data one half-cycle ahead of the
falling edge of the SPICLK signal and receives data on the falling edge of the SPICLK signal.
− Rising edge without phase delay: SPICLK inactive low. SPI transmits data on the rising edge of the
SPICLK signal and receives data on the falling edge of the SPICLK signal.
− Rising edge with phase delay: SPICLK inactive low. SPI transmits data one half-cycle ahead of the
falling edge of the SPICLK signal and receives data on the rising edge of the SPICLK signal.
D Simultaneous receive and transmit operation (transmit function can be disabled in software)
D Transmitter and receiver operations are accomplished through either interrupt-driven or polled algorithms.
D Nine SPI module control registers: Located in control register frame beginning at address 7040h.
NOTE: All registers in this module are 16-bit registers that are connected to the 16-bit peripheral bus. When a register is accessed, the
register data is in the lower byte (7 −0), and the upper byte (15 −8) is read as zeros. Writing to the upper byte has no effect.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 55

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

serial peripheral interface (SPI) module (continued)

Figure 15 is a block diagram of the SPI in slave mode.

SPIRXBUF.15 −0
Receiver Overrun
Overrun Flag INT ENA
SPIRXBUF SPI Priority
Buffer Register SPISTS.7 0 Level 1
To CPU SPIPRI.6
SPICTL.4 INT
SPITXBUF.15 −0 1 Level 5
16 INT
SPITXBUF
Buffer Register SPI INT
SPI INT FLAG ENA External
Connections
SPISTS.6
16
SPICTL.0

M M

SPIDAT
S
Data Register S SW1 SPISIMO
M
SPIDAT.15 −0 M

S
S SW2 SPISOMI
Talk
SPICTL.1
SPISTE†

State Control
Master/Slave

SPI Char SPICCR.3 −0 SPICTL.2

S
3 2 1 0 SW3
Clock Clock
SPI Bit Rate M S Polarity Phase
Internal SPICCR.6 SPICTL.3 SPICLK
Clock SPIBRR.6 −0
M
6 5 4 3 2 1 0

NOTE A: The diagram is shown in the slave mode.

† The SPISTE pin is driven low externally. Note that SW1, SW2, and SW3 are closed in this configuration. See the following errata for restrictions
on using the SPISTE pin:
TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A DSP Controllers Silicon Errata
(literature number SPRZ002)
TMS320LC2406A, TMS320LC2404A, TMS320LC2402A DSP Controllers Silicon Errata (literature number SPRZ185)

Figure 15. Four-Pin Serial Peripheral Interface Module Block Diagram

56 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

SPI slave mode operation in LF2403A

The LF2403A device does not have the SPISTE/IOPC5 pin. (This function is available as an internal signal only.)
The following must be done to put the LF2403A SPI in slave mode:
1. Configure SPISTE/IOPC5 signal for GPIO mode by clearing the MCRB.5 bit.
2. Configure SPISTE/IOPC5 signal as an output (by writing a 1 to bit 13 of PCDATDIR) and drive it low (by
writing a 0 to bit 5 of PCDATDIR). Note that SPISTE/IOPC5 should not be driven low until after the SPI is
configured and taken out of reset.
NOTE: The slave SPISTE/IOPC5 signal must not be driven low until after the master and slave SPI modules
are configured and taken out of reset. The initialization sequence is as follows:
a. The master SPI is configured first and taken out of reset. This ensures that the master SPICLK is
initialized to its appropriate level (high or low, depending on the polarity bit) first, before the slave SPI
starts accepting clock pulses.
b. The slave SPI is configured and taken out of reset.
c. The GPIO/SPI pins of the slave is then configured for SPI operation and the SPISTE/IOPC5 signal is
driven low. This is done after ensuring the correct level of the master SPICLK signal. One method of
doing this would be to read the level of the SPICLK pin through the PCDATDIR register and then
deciding on the appropriate course of action.
d. SPI transmission may commence now. Transmission of data should not be attempted until both master
and slave are configured and the slave SPISTE/IOPC5 signal is driven low.

PLL-based clock module

The 240xA has an on-chip, PLL-based clock module. This module provides all the necessary clocking signals
for the device, as well as control for low-power mode entry. The PLL has a 3-bit ratio control to select different
CPU clock rates. See Figure 16 for the PLL Clock Module Block Diagram, Table 9 for clock rates, and Table 10
for the loop filter component values.
The PLL-based clock module provides two modes of operation:
D Crystal-operation
This mode allows the use of an external crystal/resonator to provide the time base to the device.
D External clock source operation
This mode allows the internal oscillator to be bypassed. The device clocks are generated from an external
clock source input on the XTAL1/CLKIN pin. In this case, an external oscillator clock is connected to the
XTAL1/CLKIN pin.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 57

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PLL-based clock module (continued)

XTAL1/CLKIN
Cb1
RESONATOR/
CRYSTAL

XTAL2 Fin
PLL CLKOUT
Cb2

PLLF

R1
C2 XTAL
OSC
3-bit
C1
PLL Select
PLLF2
(SCSR1.[11:9])

Figure 16. PLL Clock Module Block Diagram

Table 9. PLL Clock Selection Through Bits (11−9) in SCSR1 Register

CLK PS2 CLK PS1 CLK PS0 CLKOUT
0 0 0 4 × Fin
0 0 1 2 × Fin
0 1 0 1.33 × Fin
0 1 1 1 × Fin
1 0 0 0.8 × Fin
1 0 1 0.66 × Fin
1 1 0 0.57 × Fin
1 1 1 0.5 × Fin

Default multiplication factor after reset is (1,1,1), i.e., 0.5 × Fin.

NOTE:
The bootloader sets the PLL to x2 or x4 option. If the bootloader is used, the value of CLKIN used
should not force CLKOUT to exceed the maximum rated device speed. See the “Boot ROM” section
for more details.

external reference crystal clock option

The internal oscillator is enabled by connecting a crystal across the XTAL1/CLKIN and XTAL2 pins as shown
in Figure 17a. The crystal should be in fundamental operation and parallel resonant, with an effective series
resistance of 30 Ω −150 Ω and draws no more than 1 mW; it should be specified at a load capacitance of 20 pF.
NOTE: Lx240xA crystal biasing needs an external 1 MΩ resistor across X1 and X2 pins for reliable operation. See the TMS320LF2407A,
LF2406A, LF2403A, LF2402A DSP Controllers Silicon Errata (literature number SPRZ002) or the TMS320LC2406A, TMS320LC2404A,
TMS320LC2402A DSP Controllers Silicon Errata (literature number SPRZ185) for details on this requirement.

external reference oscillator clock option

The internal oscillator is disabled by connecting a clock signal to XTAL1/CLKIN and leaving the XTAL2 input
pin unconnected as shown in part b of Figure 17.

58 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external reference oscillator clock option (continued)

XTAL1/CLKIN XTAL2 XTAL1/CLKIN XTAL2

External Clock Signal

Crystal (Toggling 0 −3.3 V) NC

Cb1 Cb2
(see Note A) (see Note A)
(a) (b)
NOTE A: TI recommends that customers have the resonator/crystal vendor characterize the operation of their device with the DSP chip. The
resonator/crystal vendor has the equipment and expertise to tune the tank circuit. The vendor can also advise the customer regarding
the proper tank component values that will ensure start-up and stability over the entire operating range.

Figure 17. Recommended Crystal / Clock Connection

loop filter
The PLL module uses an external loop filter circuit for jitter minimization. The components for the loop filter
circuit are R1, C1, and C2. The capacitors (C1 and C2) must be non-polarized. This loop filter circuit is connected
between the PLLF and PLLF2 pins (see Figure 16). For examples of component values of R1, C1, and C2 at
a specified oscillator frequency (XTAL1), see Table 10.

Table 10. Loop Filter Component Values With Damping Factor = 2.0
XTAL1/CLKIN FREQUENCY
R1 (Ω) (± 5% TOLERANCE) 1/4 W C1 (µF) (± 20% TOLERANCE) C2 (µF) (± 20% TOLERANCE)
(MHz)
4 4.7 3.9 0.082
5 5.6 2.7 0.056
6 6.8 1.8 0.039
7 8.2 1.5 0.033
8 9.1 1 0.022
9 10 0.82 0.015
10 11 0.68 0.015
11 12 0.56 0.012
12 13 0.47 0.01
13 15 0.39 0.0082
14 15 0.33 0.0068
15 16 0.33 0.0068
16 18 0.27 0.0056
17 18 0.22 0.0047
18 20 0.22 0.0047
19 22 0.18 0.0039
20 24 0.15 0.0033

low-power modes
The 240xA has an IDLE instruction. When executed, the IDLE instruction stops the clocks to all circuits in the
CPU, but the clock output from the CPU continues to run. With this instruction, the CPU clocks can be shut down
to save power while the peripherals (clocked with CLKOUT) continue to run. The CPU exits the IDLE state if
it is reset, or, if it receives an interrupt request.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 59

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

clock domains
All 240xA-based devices have two clock domains:
1. CPU clock domain − consists of the clock for most of the CPU logic
2. System clock domain − consists of the peripheral clock (which is derived from CLKOUT of the CPU) and
the clock for the interrupt logic in the CPU.
When the CPU goes into IDLE mode, the CPU clock domain is stopped while the system clock domain continues
to run. This mode is also known as IDLE1 mode. The 240xA CPU also contains support for a second IDLE mode,
IDLE2. By asserting IDLE2 to the 240xA CPU, both the CPU clock domain and the system clock domain are
stopped, allowing further power savings. A third low-power mode, HALT mode, the deepest, is possible if the
oscillator and WDCLK are also shut down when in IDLE2 mode.
Two control bits, LPM1 and LPM0, specify which of the three possible low-power modes is entered when the
IDLE instruction is executed (see Table 11). These bits are located in the System Control and Status
Register 1 (SCSR1), and they are described in the TMS320LF/LC240xA DSP Controllers Reference Guide:
System and Peripherals (literature number SPRU357).
Table 11. Low-Power Modes Summary
LPMx BITS CPU SYSTEM
WDCLK PLL OSC FLASH EXIT
LOW-POWER MODE SCSR1 CLOCK CLOCK
STATUS STATUS STATUS POWER CONDITION
[13:12] DOMAIN DOMAIN
CPU running normally XX On On On On On On —

Peripheral
Interrupt,
IDLE1 − (LPM0) 00 Off On On On On On External Interrupt,
Reset,
PDPINTA/B

Wakeup
Interrupts,
IDLE2 − (LPM1) 01 Off Off On On On On External Interrupt,
Reset,
PDPINTA/B

HALT − (LPM2) Reset,

1X Off Off Off Off Off Off†
[PLL/OSC power down] PDPINTA/B

† The Flash must be powered down by the user code prior to entering LPM2. For more details, see the TMS320LF/LC240xA DSP Controllers
Reference Guide: System and Peripherals (literature number SPRU357).

other power-down options

240xA devices have clock-enable bits to the following on-chip peripherals: ADC, SCI, SPI, CAN, EVB, and EVA.
Clock to these peripherals are disabled after reset; thus, start-up power can be low for the device.
Depending on the application, these peripherals can be turned on/off to achieve low power.
See the SCSR1 register for details on the peripheral clock enable bits.

digital I/O and shared pin functions

The 240xA has up to 41 general-purpose, bidirectional, digital I/O (GPIO) pins—most of which are shared
between primary functions and I/O. Most I/O pins of the 240xA are shared with other functions. The digital I/O
ports module provides a flexible method for controlling both dedicated I/O and shared pin functions. All I/O and
shared pin functions are controlled using eight 16-bit registers. These registers are divided into two types:

60 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

digital I/O and shared pin functions (continued)

D Output Control Registers — used to control the multiplexer selection that chooses between the primary
function of a pin or the general-purpose I/O function.
D Data and Control Registers — used to control the data and data direction of bidirectional I/O pins.
description of shared I/O pins
The control structure for shared I/O pins is shown in Figure 18, where each pin has three bits that define its
operation:
D MUX control bit — this bit selects between the primary function (1) and I/O function (0) of the pin.
D I/O direction bit — if the I/O function is selected for the pin (MUX control bit is set to 0), this bit determines
whether the pin is an input (0) or an output (1).
D I/O data bit — if the I/O function is selected for the pin (MUX control bit is set to 0) and the direction selected
is an input, data is read from this bit; if the direction selected is an output, data is written to this bit.
The MUX control bit, I/O direction bit, and I/O data bit are in the I/O control registers.

IOP Data Bit Primary Primary

(Read/Write) Function Function
(Output Section) (Input Section)

In Out

IOP DIR Bit

0 = Input
1 = Output

0 1 MUX Control Bit

0 = I/O Function
1 = Primary Function
Pullup
or
Pulldown
(Internal)

Primary
Function Pin
or I/O Pin

Figure 18. Shared Pin Configuration

A summary of shared pin configurations and associated bits is shown in Table 12.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 61

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

description of shared I/O pins (continued)

Table 12. Shared Pin Configurations†
PIN FUNCTION SELECTED MUX I/O PORT DATA AND DIRECTION‡
MUX CONTROL
CONTROL
(MCRx.n = 1) (MCRX.N = 0) VALUE AT RESET
REGISTER REGISTER DATA BIT NO.§ DIR BIT NO.¶
Primary Function I/O (MCRx.n)
(name.bit #)
PORT A
SCITXD IOPA0 MCRA.0 0 PADATDIR 0 8
SCIRXD IOPA1 MCRA.1 0 PADATDIR 1 9
XINT1 IOPA2 MCRA.2 0 PADATDIR 2 10
CAP1/QEP1 IOPA3 MCRA.3 0 PADATDIR 3 11
CAP2/QEP2 IOPA4 MCRA.4 0 PADATDIR 4 12
CAP3 IOPA5 MCRA.5 0 PADATDIR 5 13
PWM1 IOPA6 MCRA.6 0 PADATDIR 6 14
PWM2 IOPA7 MCRA.7 0 PADATDIR 7 15
PORT B
PWM3 IOPB0 MCRA.8 0 PBDATDIR 0 8
PWM4 IOPB1 MCRA.9 0 PBDATDIR 1 9
PWM5 IOPB2 MCRA.10 0 PBDATDIR 2 10
PWM6 IOPB3 MCRA.11 0 PBDATDIR 3 11
T1PWM/T1CMP IOPB4 MCRA.12 0 PBDATDIR 4 12
T2PWM/T2CMP IOPB5 MCRA.13 0 PBDATDIR 5 13
TDIRA IOPB6 MCRA.14 0 PBDATDIR 6 14
TCLKINA IOPB7 MCRA.15 0 PBDATDIR 7 15
PORT C
W/R # IOPC0 MCRB.0 1 PCDATDIR 0 8
BIO IOPC1 MCRB.1 1 PCDATDIR 1 9
SPISIMO IOPC2 MCRB.2 0 PCDATDIR 2 10
SPISOMI IOPC3 MCRB.3 0 PCDATDIR 3 11
SPICLK IOPC4 MCRB.4 0 PCDATDIR 4 12
SPISTE IOPC5 MCRB.5 0 PCDATDIR 5 13
CANTX IOPC6 MCRB.6 0 PCDATDIR 6 14
CANRX IOPC7 MCRB.7 0 PCDATDIR 7 15
PORT D
XINT2/ADCSOC IOPD0 MCRB.8 0 PDDATDIR 0 8
EMU0 Reserved MCRB.9|| 1 PDDATDIR 1 9
EMU1 Reserved MCRB.10|| 1 PDDATDIR 2 10
TCK Reserved MCRB.11|| 1 PDDATDIR 3 11
TDI Reserved MCRB.12|| 1 PDDATDIR 4 12
TDO Reserved MCRB.13|| 1 PDDATDIR 5 13
TMS Reserved MCRB.14|| 1 PDDATDIR 6 14
TMS2 Reserved MCRB.15|| 1 PDDATDIR 7 15
† Bold, italicized pin names indicate pin functions at reset.
‡ Valid only if the I/O function is selected on the pin
§ If the GPIO pin is configured as an output, these bits can be written to. If the pin is configured as an input, these bits are read from.
¶ If the DIR bit is 0, the GPIO pin functions as an input. For a value of 1, the pin is configured as an output.
# At reset, all LF240xA devices come up with the W/R/IOPC0 pin in W/R mode. On devices that lack an external memory interface (e.g., LF2406A),
W/R mode is not functional and MCRB.0 must be set to a 0 if the IOPC0 pin is to be used. The XMIF Hi-Z control bit (bit 4 of the SCSR2 register)
is reserved in these devices and must be written with a zero.
|| Bits 15 through 9 of the MCRB register must be written as 1 only. Writing a 0 to any of these bits will cause unpredictable operation of the device.

62 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

description of shared I/O pins (continued)

Table 12. Shared Pin Configurations† (Continued)
PIN FUNCTION SELECTED MUX I/O PORT DATA AND DIRECTION‡
MUX CONTROL
CONTROL
(MCRx.n = 1) (MCRX.N = 0) VALUE AT RESET
REGISTER REGISTER DATA BIT NO.§ DIR BIT NO.¶
Primary Function I/O (MCRx.n)
(name.bit #)
PORT E
CLKOUT IOPE0 MCRC.0 1 PEDATDIR 0 8
PWM7 IOPE1 MCRC.1 0 PEDATDIR 1 9
PWM8 IOPE2 MCRC.2 0 PEDATDIR 2 10
PWM9 IOPE3 MCRC.3 0 PEDATDIR 3 11
PWM10 IOPE4 MCRC.4 0 PEDATDIR 4 12
PWM11 IOPE5 MCRC.5 0 PEDATDIR 5 13
PWM12 IOPE6 MCRC.6 0 PEDATDIR 6 14
CAP4/QEP3 IOPE7 MCRC.7 0 PEDATDIR 7 15
PORT F
CAP5/QEP4 IOPF0 MCRC.8 0 PFDATDIR 0 8
CAP6 IOPF1 MCRC.9 0 PFDATDIR 1 9
T3PWM/T3CMP IOPF2 MCRC.10 0 PFDATDIR 2 10
T4PWM/T4CMP IOPF3 MCRC.11 0 PFDATDIR 3 11
TDIRB IOPF4 MCRC.12 0 PFDATDIR 4 12
TCLKINB IOPF5 MCRC.13 0 PFDATDIR 5 13
† Bold, italicized pin names indicate pin functions at reset.
‡ Valid only if the I/O function is selected on the pin
§ If the GPIO pin is configured as an output, these bits can be written to. If the pin is configured as an input, these bits are read from.
¶ If the DIR bit is 0, the GPIO pin functions as an input. For a value of 1, the pin is configured as an output.
# At reset, all LF240xA devices come up with the W/R/IOPC0 pin in W/R mode. On devices that lack an external memory interface (e.g., LF2406A),
W/R mode is not functional and MCRB.0 must be set to a 0 if the IOPC0 pin is to be used. The XMIF Hi-Z control bit (bit 4 of the SCSR2 register)
is reserved in these devices and must be written with a zero.
|| Bits 15 through 9 of the MCRB register must be written as 1 only. Writing a 0 to any of these bits will cause unpredictable operation of the device.

digital I/O control registers

Table 13 lists the registers available in the digital I/O module. As with other 240xA peripherals, these registers
are memory-mapped to the data space.

Table 13. Addresses of Digital I/O Control Registers

ADDRESS REGISTER NAME
7090h MCRA I/O MUX control register A
7092h MCRB I/O mux control register B
7094h MCRC I/O mux control register C
7095h PEDATDIR I/O port E data and direction register
7096h PFDATDIR I/O port F data and direction register
7098h PADATDIR I/O port A data and direction register
709Ah PBDATDIR I/O port B data and direction register
709Ch PCDATDIR I/O port C data and direction register
709Eh PDDATDIR I/O port D data and direction register

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 63

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface (LF2407A)

The TMS320LF2407A can address up to 64K × 16 words of memory (or registers) in each of the program, data,
and I / O spaces. On-chip memory, when enabled, occupies some of this off-chip range.
The CPU of the TMS320LF2407A schedules a program fetch, data read, and data write on the same machine
cycle. This is because from on-chip memory, the CPU can execute all three of these operations in the same
cycle. However, the external interface multiplexes the internal buses to one address bus and one data bus. The
external interface sequences these operations to complete first the data write, then the data read, and finally
the program read.
The LF2407A supports a wide range of system interfacing requirements. Program, data, and I/O address
spaces provide interface to memory and I/O, thereby maximizing system throughput. The full 16-bit address
and data buses, along with the PS, DS, and IS space-select signals, allow addressing of 64K 16-bit words in
program, data, and I/O space. Since on-chip peripheral registers occupy positions of data-memory space
(7000−7FFF), the externally addressable data-memory space is 32K 16-bit words (8000−FFFF). Note that the
global memory space of the C2xx core is not used for 240xA DSP devices. Therefore, the global memory
allocation register (GREG) is reserved for all these devices.
Input/output (I/O) design is simplified by having I/O space treated the same way as memory. I/O devices are
accessed in the I/O address space using the processor’s external address and data buses in the same manner
as memory-mapped devices.
The LF2407A external parallel interface provides various control signals to facilitate interfacing to the device.
The R/ W output signal is provided to indicate whether the current cycle is a read or a write. The STRB output
signal provides a timing reference for all external cycles. For convenience, the device also provides the RD and
the WE output signals, which indicate a read cycle and a write cycle, respectively, along with timing information
for those cycles. The availability of these signals minimizes external gating necessary for interfacing external
devices to the LF2407A.
The 2407A provides RD and W/R signals to help the zero-wait-state external memory interface. At higher
CLKOUT speeds, RD may not meet the slow memory device’s timing. In such instances, the W/R signal could
be used as an alternative signal with some tradeoffs. See the timing parameters for details.
The TMS320LF2407A supports zero-wait-state reads on the external interface. However, to avoid bus conflicts,
writes take two cycles. This allows the TMS320LF2407A to buffer the transition of the data bus from input to
output (or from output to input) by a half cycle. In most systems, the TMS320LF2407A ratio of reads to writes
is significantly large to minimize the overhead of the extra cycle on writes.
wait-state generation (LF2407A only)
Wait-state generation is incorporated in the LF2407A without any external hardware for interfacing the LF2407A
with slower off-chip memory and I/O devices. Adding wait states lengthens the time the CPU waits for external
memory or an external I/O port to respond when the CPU reads from or writes to that external memory or I/O
port. Specifically, the CPU waits one extra cycle (one CLKOUT cycle) for every wait state. The wait states
operate on CLKOUT cycle boundaries.
To avoid bus conflicts, writes from the LF2407A always take at least two CLKOUT cycles. The LF2407A offers
two options for generating wait states:
D READY Signal. With the READY signal, you can externally generate any number of wait states. The READY
pin has no effect on accesses to internal memory.
D On-Chip Wait-State Generator. With this generator, you can generate zero to seven wait states.

64 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

generating wait states with the READY signal

When the READY signal is low, the LF2407A waits one CLKOUT cycle and then checks READY again. The
LF2407A does not continue executing until the READY signal is driven high; therefore, if the READY signal is
not used, it should be pulled high.
The READY pin can be used to generate any number of wait states. However, when the LF2407A operates at
full speed, it may not respond fast enough to provide a READY-based wait state for the first cycle. For extended
wait states using external READY logic, the on-chip wait-state generator should be programmed to generate
at least one wait state.
generating wait states with the LF2407A on-chip software wait-state generator
The software wait-state generator can be programmed to generate zero to seven wait states for a given off-chip
memory space (program, data, or I/O), regardless of the state of the READY signal. These zero to seven wait
states are controlled by the wait-state generator register (WSGR) (I/O FFFFh). For more detailed information
on the WSGR and associated bit functions, see the TMS320LF/LC240xA DSP Controllers Reference Guide:
System and Peripherals (literature number SPRU357).

watchdog (WD) timer module

The x240xA devices include a watchdog (WD) timer module. The WD function of this module monitors software
and hardware operation by generating a system reset if it is not periodically serviced by software by having the
correct key written. The WD timer operates independently of the CPU. It does not need any CPU initialization
to function. When a system reset occurs, the WD timer defaults to the fastest WD timer rate available (WDCLK
signal = CLKOUT/512). As soon as reset is released internally, the CPU starts executing code, and the WD timer
begins incrementing. This means that, to avoid a premature reset, WD setup should occur early in the power-up
sequence. See Figure 19 for a block diagram of the WD module. The WD module features include the following:
D WD Timer
− Seven different WD overflow rates
− A WD-reset key (WDKEY) register that clears the WD counter when a correct value is written, and
generates a system reset if an incorrect value is written to the register
− WD check bits that initiate a system reset if an incorrect value is written to the WD control register
(WDCR)
D Automatic activation of the WD timer, once system reset is released
− Three WD control registers located in control register frame beginning at address 7020h.
NOTE: All registers in this module are 8-bit registers. When a register is accessed, the register data is in the lower byte, the upper byte
is read as zeros. Writing to the upper byte has no effect.
Figure 19 shows the WD block diagram. Table 14 shows the different WD overflow (time-out) selections.
The watchdog can be disabled in software by writing ‘1’ to bit 6 of the WDCR register (WDCR.6) while bit 5 of
the SCSR2 register (SCSR2.5) is 1. If SCSR2.5 is 0, the watchdog will not be disabled. SCSR2.5 is equivalent
to the WDDIS pin of the TMS320F243/241 devices.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 65

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

watchdog (WD) timer module (continued)

CLKOUT 3-bit CLKIN

÷ 512 PLL
Prescaler
6-Bit
Free- /64
Running /32 On-Chip
Counter Oscillator or
/16
WDCLK External
/8
Clock
System /4
Reset CLR
/2

000
001
010
WDPS 011
WDCR.2 −0 100
2 1 0 101
110
WDCR.6 111
WDDIS WDFLAG
WDCNTR.7 −0
WDCR.7 Reset Flag
8-Bit Watchdog
Counter One-Cycle Internal
Delay PS/257 Pullup
CLR
RS Pin

WDKEY.7 −0 System
Bad Key Reset
Watchdog 55 + AA Request
Good Key WDCHK2−0
Reset Key Detector
Register
WDCR.5 −3†
Bad WDCR Key
3
3
System Reset
1 0 1
(Constant
Value)
† Writing to bits WDCR.5 −3 with anything but the correct pattern (101) generates a system reset.

Figure 19. Block Diagram of the WD Module

66 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

watchdog (WD) timer module (continued)

Table 14. WD Overflow (Time-out) Selections

WATCHDOG
WD PRESCALE SELECT BITS
WDCLK DIVIDER CLOCK RATE†
WDPS2 WDPS1 WDPS0 FREQUENCY (Hz)
0 0 X‡ 1 WDCLK/1
0 1 0 2 WDCLK/2
0 1 1 4 WDCLK/4
1 0 0 8 WDCLK/8
1 0 1 16 WDCLK/16
1 1 0 32 WDCLK/32
1 1 1 64 WDCLK/64
† WDCLK = CLKOUT/512
‡ X = Don’t care

development support
Texas Instruments (TI) offers an extensive line of development tools for the x240xA generation of DSPs,
including tools to evaluate the performance of the processors, generate code, develop algorithm
implementations, and fully integrate and debug software and hardware modules.
The following products support development of x240xA-based applications:
Software Development Tools:
Assembler/linker
Simulator
Optimizing ANSI C compiler
Application algorithms
C/Assembly debugger and code profiler
Hardware Development Tools:
Emulator XDS510 (supports x24x multiprocessor system debug)
TMS320LF2407 EVM (Evaluation module for 2407 DSP)
See Table 15 and Table 16 for complete listings of development support tools for the x240xA. For information
on pricing and availability, contact the nearest TI field sales office or authorized distributor.
Table 15. Development Support Tools
DEVELOPMENT TOOL PLATFORM PART NUMBER
Software
Code Composer Studio v.2.2 PC TMDSCCS2000-1
Hardware − Emulation Debug Tools
XDS510PP Pod (Parallel Port) with JTAG cable PC TMDS3P701014

PC is a trademark of International Business Machines Corp..

Code Composer Studio, XDS510, and XDS510PP are trademarks of Texas Instruments.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 67

TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

development support (continued)

Table 16. TMS320x24x-Specific Development Tools

DEVELOPMENT TOOL PLATFORM PART NUMBER
Hardware − Evaluation/Starter Kits
2401A eZdsp PC TMDSeZD2401
F2407A EVM PC TMDS3P701016A
LF2407A eZdsp PC TMDSEZD2407

The LF2407 Evaluation Module (EVM) provide designers of motor and motion control applications with a
complete and cost-effective way to take their designs from concept to production. These tools offer both a
hardware and software development environment and include:
D Flash-based LF240xA evaluation board
D Code Generation Tools
D Assembler/Linker
D C Compiler
D Source code debugger
D C24x Debugger
D Code Composer IDE
D XDS510PP JTAG-based emulator
D Sample applications code
D Universal 5-V DC power supply
D Documentation and cables
device and development support tool nomenclature
To designate the stages in the product development cycle, TI assigns prefixes to the part numbers of all
TMS320 DSP devices and support tools. Each TMS320 DSP commercial family member has one of three
prefixes: TMX, TMP, or TMS. Texas Instruments recommends two of three possible prefix designators for its
support tools: TMDX and TMDS. These prefixes represent evolutionary stages of product development from
engineering prototypes (TMX / TMDX) through fully qualified production devices/tools (TMS / TMDS).
Device development evolutionary flow:
TMX Experimental device that is not necessarily representative of the final device’s electrical specifications
TMP Final silicon die that conforms to the device’s electrical specifications but has not completed quality
and reliability verification
TMS Fully qualified production device

Support tool development evolutionary flow:

TMDX Development-support product that has not yet completed Texas Instruments internal qualification
testing.
TMDS Fully qualified development-support product
TMX and TMP devices and TMDX development-support tools are shipped against the following disclaimer:
“Developmental product is intended for internal evaluation purposes.”
TMS devices and TMDS development-support tools have been characterized fully, and the quality and reliability
of the device have been demonstrated fully. TI’s standard warranty applies.

TMS320 is a trademark of Texas Instruments.

eZdsp is a trademark of Spectrum Digital, Inc.

68 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A,
TMS320LF2406A,
TMS320LF2403A,
TMS320LF2402A
TMS320LC2406A,TMS320LC2404A,TMS320LC2403A,TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

device and development support tool nomenclature (continued)

Predictions show that prototype devices (TMX or TMP) have a greater failure rate than the standard production
devices. Texas Instruments recommends that these devices not be used in any production system because their
expected end-use failure rate still is undefined. Only qualified production devices are to be used.
TI device nomenclature also includes a suffix with the device family name. This suffix indicates the package type
(for example, PAG, PG, PGE, and PZ) and temperature range (for example, A). Figure 20 provides a legend
for reading the complete device name for any TMS320x240xA family member. See the timing section for specific
options that are available on 240xA devices.
TMS 320 LF 2407A PGE A

PREFIX TEMPERATURE RANGE

TMX = experimental device A = −40°C to 85°C
TMP = prototype device S = −40°C to 125°C
TMS = qualified device

PACKAGE TYPE†‡
DEVICE FAMILY PG = 64-pin QFP
PAG = 64-pin TQFP
320 = TMS320 DSP Family PGE = 144-pin plastic LQFP
PZ = 100-pin plastic LQFP
VF = 32-pin plastic LQFP

DEVICE
TECHNOLOGY 240xA DSP
2407A§
LC = ROM (3.3 V) 2406A§
LF = Flash EEPROM (3.3 V) 2404A
2403A
2402A
2401A

† QFP = Quad Flatpack

LQFP = Low-Profile Quad Flatpack
TQFP = Thin Quad Flatpack
‡ Not yet available Lead (Pb)-free. For estimated conversion dates, go to www.ti.com/leadfree
§ The package dimensions of the 2407A and 2406A devices correspond to the LQFP package. These devices were stated to be
in TQFP packaging in the TMX data sheets. The package dimensions have not changed; only the package designation has
changed.

Figure 20. TMS320x240xA Device Nomenclature

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 69

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

documentation support
Extensive documentation supports all of the TMS320 DSP family generations of devices from product
announcement through applications development. The types of documentation available include: data sheets,
such as this document, with design specifications; complete user’s guides for all devices and development
support tools; and hardware and software applications. Useful reference documentation includes:
D User Guides
− TMS320LF/LC240xA DSP Controllers Reference Guide: System and Peripherals (literature number
SPRU357)
− Manual Update Sheet for TMS320LF/LC240xA DSP Controllers Reference Guide: System and
Peripherals (SPRU357) [literature number SPRZ015]
− TMS320C240 DSP Controllers CPU, System, and Instruction Set Reference Guide
(literature number SPRU160)
D Data Sheets
− TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A, TMS320LC2406A,
TMS320LC2404A, TMS320LC2402A DSP Controllers (literature number SPRS145)
− TMS320LF2407, TMS320LF2406, TMS320LF2402 DSP Controllers (literature number SPRS094)
− TMS320LF2401A DSP Controller (literature number SPRS161)
D Application Reports
− 3.3-V DSP for Digital Motor Control (literature number SPRA550)
To receive copies of TMS320 DSP literature, contact the Literature Response Center at 800-477-8924.
A series of DSP textbooks is published by Prentice-Hall and John Wiley & Sons to support digital signal
processing research and education. The TMS320 DSP newsletter, Details on Signal Processing, is published
quarterly and distributed to update TMS320 DSP customers on product information.
Updated information on the TMS320 DSP controllers can be found on the worldwide web at:
http://www.ti.com.
To send comments regarding this TMS320x240xA data sheet (literature number SPRS145), use the
comments@books.sc.ti.com email address, which is a repository for feedback. For questions and support,
contact the Product Information Center listed at the http://www.ti.com/sc/docs/pic/home.htm site.

70 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

LF240xA AND LC240xA ELECTRICAL SPECIFICATIONS DATA

absolute maximum ratings over operating free-air temperature ranges (unless otherwise noted)†
Supply voltage range, VDD, PLLVCCA, VDDO, and VCCA (see Note 1) . . . . . . . . . . . . . . . . . . . − 0.3 V to 4.6 V
VCCP range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to 5.5 V
Input voltage range, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to 4.6 V
Output voltage range, VO LF240xA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to 4.6 V
Output voltage range,VO LC240xA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to 4.6 V
Input clamp current, IIK (VIN < 0 or VIN > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 20 mA
Operating free-air temperature ranges, TA: A version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 40°C to 85°C
S version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 40°C to 125°C
Junction temperature range, TJ (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 40°C to 150°C
Storage temperature range, Tstg (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 65°C to 150°C
†Clamp current stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress
ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to VSS.
2. Long−term high−temperature storage and/or extended use at maximum temperature conditions may result in a reduction of overall
device life. For additional information, see the IC Package Thermal Metrics Application Report (literature number SPRA953) and
the Reliability Data for TMS320LF24x and TMS320F281x Devices Application Report (literature number SPRA963).

recommended operating conditions‡§

MIN NOM MAX UNIT
VDD/VDDO Supply voltage VDDO = VDD ± 0.3 V 3 3.3 3.6 V
VSS Supply ground 0 0 0 V
PLLVCCA PLL supply voltage 3 3.3 3.6 V
VCCA¶ ADC supply voltage 3 3.3 3.6 V
VCCP Flash programming supply voltage# 4.75 5 5.25 V
fCLKOUT Device clock frequency (system clock) 2 40 MHz
VIH|| High level input voltage
High-level All inputs 2 VDD + 0 3
0.3 V
VIL Low level input voltage
Low-level All inputs 08
0.8 V
Output pins Group 1k −2 mA
IOH High-level
High level output source current, VOH = 2.4 V Output pins Group 2k −4 mA
Output pins Group 3k −8 mA
Output pins Group 1k 2 mA
IOL Low-level
Low level output sink current, VOL = VOL MAX Output pins Group 2k 4 mA
Output pins Group 3k 8 mA
A version − 40 85
TA Free air temperature
Free-air °C
S version − 40 125
TJ Junction temperature − 40 25 150 °C
Nf Flash endurance for the array (Write/erase cycles) − 40°C to 85°C 10K cycles
‡ See the mechanical data package page for thermal resistance values, ΘJA (junction-to-ambient), ΘJC (junction-to-case), and Ψjt (junction-to-top
of case)
§ The drive strengths of the EVA PWM pins and the EVB PWM pins are not identical.
¶V
CCA should not differ from VDD by more than 0.3 V.
# For applications that involve millions of power cycles, it is recommended that V
CCP be powered after VDD.
|| The input buffers used in 240x/240xA are not 5-V compatible.
k Primary signals and their groupings:
Group 1: PWM1−PWM6, T1PWM, T2PWM, CAP1−CAP6, TCLKINA, IOPF6, IOPC1, TCK, TDI, TMS, XF, A0−A15, RS
Group 2: PS/DS/IS, RD, W/R, STRB, R/W, VIS_OE, D0−D15, T3PWM, T4PWM, PWM7−PWM12, CANTX, CANRX, SPICLK,
SPISOMI, SPISIMO, SPISTE, EMU0, EMU1, TDO, TMS2
Group 3: TDIRA, TDIRB, SCIRXD, SCITXD, XINT1, XINT2, CLKOUT, TCLKINB

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 71

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

electrical characteristics over recommended operating free-air temperature ranges (unless

otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDD = 3.0 V, IOH = IOHMAX 2.4 VDDO
VOH High level output voltage
High-level V
All outputs at 50 µA VDDO − 0.2
VOL† Low-level output voltage IOL = IOLMAX 0.4 V
With pullup −10 −16 −30
IIL Input current (low level) VDD = 3
3.3
3VV, VIN = 0 V A
µA
With pulldown ±2
With pullup ±2
IIH Input current (high level) VDD = 3 3V
3.3 V, VIN = VDD A
µA
With pulldown 10 16 30
IOZ Leakage current, high-impedance state (off-state) VO = VDD or 0 V ±2 µA
Ci Input capacitance 2 pF
Co Output capacitance 3 pF
† For group 3 pins, VOL could be up to 0.6 V, when output source current is 8 mA.

current consumption by power-supply pins over recommended operating free-air temperature

ranges at 40-MHz CLOCKOUT
PARAMETER TEST CONDITIONS DEVICE MIN TYP MAX UNIT
LF2407A 95 120 mA
A test code running in B0 RAM does the
LF2406A 95 120 mA
following:
1. Enables clock to all peripherals. LF2403A 95 120 mA
2 Toggles all PWM outputs at 20 kHz
2. kHz.
3. Performs a continuous conversion of all LF2402A 85 110 mA
IDD† Operational Current
ADC channels. LC2406A 85 110 mA
4 An infinite loop which transmits a character
4.
out of SCI and executes MACD instructions. LC2404A 85 110 mA
LC2403A 75 95 mA
NOTE: All I/O pins are floating.
floating
LC2402A 75 95 mA
LF2407A 10 22 mA
LF2406A 10 22 mA
LF2403A 10 22 mA
LF2402A 10 22 mA
ICCA ADC module current
LC2406A 10 22 mA
LC2404A 10 22 mA
LC2403A 10 22 mA
LC2402A 10 22 mA
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.

72 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LF2407A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD† Operational Current Clock to all peripherals is enabled. 70 80 mA
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD † Operational Current 35 45 mA
Clock to all peripherals is disabled.
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA

IDD† Operational Current Clock to all peripherals is disabled. 200 400 µA

LPM2 Flash is powered down.
down
ICCA ADC module current Input clock is disabled.‡ 0 0 mA
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LF2406A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD † Operational Current 70 80 mA
Clock to all peripherals is enabled.
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD† Operational Current Clock to all peripherals is disabled. 35 45 mA
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA

IDD† Operational Current Clock to all peripherals is disabled. 200 400 µA

LPM2 Flash is powered down.
down
ICCA ADC module current Input clock is disabled.‡ 0 0 mA
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LF2403A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD † Operational Current 70 80 mA
Clock to all peripherals is enabled.
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD † Operational Current 35 45 mA
Clock to all peripherals is disabled.
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA

IDD † Operational Current Clock to all peripherals is disabled. 200 400 µA

LPM2 Flash is powered down.
down
ICCA ADC module current Input clock is disabled.‡ 0 0 mA
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 73

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LF2402A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD† Operational Current Clock to all peripherals is enabled. 60 70 mA
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD † Operational Current 35 45 mA
Clock to all peripherals is disabled.
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA

IDD† Operational Current Clock to all peripherals is disabled. 200 400 µA

LPM2 Flash is powered down.
down
ICCA ADC module current Input clock is disabled.‡ 0 0 mA
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LC2406A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD † Operational Current 50 70 mA
Clock to all peripherals is enabled.
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD† Operational Current Clock to all peripherals is disabled. 35 45 mA
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA
−40°C to 85°C 20 200 µA
IDD† Operational Current
−40°C to 125°C 20 400 µA
LPM2
Clock to all peripherals is disabled.
ICCA ADC module current 0 0 mA
Input clock is disabled.‡
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LC2404A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD † Operational Current 50 70 mA
Clock to all peripherals is enabled.
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD † Operational Current 35 45 mA
Clock to all peripherals is disabled.
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA
−40°C to 85°C 20 200 µA
IDD† Operational Current
−40°C to 125°C 20 400 µA
LPM2
Clock to all peripherals is disabled.
ICCA ADC module current 0 0 mA
Input clock is disabled.‡
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

74 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LC2403A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD† Operational Current Clock to all peripherals is enabled. 50 70 mA
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD † Operational Current 35 45 mA
Clock to all peripherals is disabled.
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA
−40°C to 85°C 20 200 µA
IDD† Operational Current
−40°C to 125°C 20 400 µA
LPM2
Clock to all peripherals is disabled.
ICCA ADC module current 0 0 mA
Input clock is disabled.‡
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

current consumption by power-supply pins over recommended operating free-air temperature

ranges during low-power modes at 40-MHz CLOCKOUT (TMS320LC2402A)
PARAMETER MODE TEST CONDITIONS MIN TYP MAX UNIT
IDD † Operational Current 40 60 mA
Clock to all peripherals is enabled.
LPM0
ICCA ADC module current No I/O pins are switching. 10 22 mA
IDD† Operational Current Clock to all peripherals is disabled. 35 45 mA
LPM1
ICCA ADC module current No I/O pins are switching. 0 0 mA
−40°C to 85°C 20 200 µA
IDD† Operational Current
−40°C to 125°C 20 400 µA
LPM2
Clock to all peripherals is disabled.
ICCA ADC module current 0 0 mA
Input clock is disabled.‡
† IDD is the current flowing into the VDD, VDDO, and PLLVCCA pins.
‡ If a quartz crystal or ceramic resonator is used as the clock source, the LPM2 mode shuts down the internal oscillator.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 75

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

current consumption graphs

100
90
80
70
Current (mA)

60
I DD

50
40
30
20
10
0
0 5 10 15 20 25 30 35 40 45
CLKOUT Frequency (MHz)

Figure 21. LF2407A Typical Current Consumption (With Peripheral Clocks Enabled)

100
90
80
70
Current (mA)

60
I DD

50
40
30
20
10
0
0 5 10 15 20 25 30 35 40 45
CLKOUT Frequency (MHz)

Figure 22. LC2406A Typical Current Consumption (With Peripheral Clocks Enabled)

Figure 23 shows the connection between the DSP and JTAG header for a single-processor configuration. If the
distance between the JTAG header and the DSP is greater than 6 inches, the emulation signals must be
buffered. If the distance is less than 6 inches, buffering is typically not needed. Figure 23 shows the simpler,
no-buffering situation. For the pullup/pulldown resistor values, see the pin description section. For details on
buffering JTAG signals and multiple processor connections, see TMS320F/C24x DSP Controllers CPU and
Instruction Set Reference Guide (literature number SPRU160).

76 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

6 inches or less

VDDO VDDIO

13 5
EMU0 EMU0 PD
14
EMU1 EMU1
2 4
TRST TRST GND
1 6
TMS TMS GND
3 8
TDI TDI GND
7 10
TDO TDO GND
11 12
TCK TCK GND
9
TCK_RET
DSP
JTAG Header

Figure 23. Emulator Connection Without Signal Buffering for the DSP

reducing current consumption

240x DSPs incorporate a unique method to reduce the device current consumption. A reduction in current
consumption can be achieved by turning off the clock to any peripheral module which is not used in a given
application. Table 17 indicates the typical reduction in current consumption achieved by turning off the clocks
to various peripherals. See the TMS320LF/LC240xA DSP Controllers Reference Guide: System and
Peripherals (literature number SPRU357) for further information on how to turn off the clock to the peripherals.

Table 17. Typical Current Consumption by Various Peripherals (at 40 MHz)

PERIPHERAL MODULE CURRENT REDUCTION (mA)
CAN 8.4

EVA 6.1

EVB 6.1

ADC 3.7†

SCI 1.9

SPI 1.3
† This number represents the current drawn by the digital portion of the ADC module.
Turning off the clock to the ADC module results in the elimination of the current drawn
by the analog portion of the ADC (ICCA) as well.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 77

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PARAMETER MEASUREMENT INFORMATION

IOL

Tester Pin
Electronics

50 Ω Output
VLOAD Under
Test
CT

IOH

Where: IOL = 2 mA (all outputs)

IOH = 300 µA (all outputs)
VLOAD = 1.5 V
CT = 50-pF typical load-circuit capacitance
Figure 24. Test Load Circuit
signal transition levels
The data in this section is shown for the 3.3-V version. Note that some of the signals use different reference
voltages, see the recommended operating conditions table. Output levels are driven to a minimum logic-high
level of 2.4 V and to a maximum logic-low level of 0.4 V.
Figure 25 shows output levels.
2.4 V (VOH)
80%

20%
0.4 V (VOL)

Figure 25. Output Levels

Output transition times are specified as follows:
D For a high-to-low transition, the level at which the output is said to be no longer high is below 80% of the
total voltage range and lower and the level at which the output is said to be low is 20% of the total voltage
range and lower.
D For a low-to-high transition, the level at which the output is said to be no longer low is 20% of the total voltage
range and higher and the level at which the output is said to be high is 80% of the total voltage range and
higher.
Figure 26 shows the input levels.
2.0 V (VIH)
90%

10%
0.8 V (VIL)

Figure 26. Input Levels

78 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

Input transition times are specified as follows:

D For a high-to-low transition on an input signal, the level at which the input is said to be no longer high is 90%
of the total voltage range and lower and the level at which the input is said to be low is 10% of the total voltage
range and lower.
D For a low-to-high transition on an input signal, the level at which the input is said to be no longer low is 10%
of the total voltage range and higher and the level at which the input is said to be high is 90% of the total
voltage range and higher.

PARAMETER MEASUREMENT INFORMATION

timing parameter symbology

Timing parameter symbols used are created in accordance with JEDEC Standard 100. To shorten the symbols,
some of the pin names and other related terminology have been abbreviated as follows:

A A[15:0] MS Memory strobe pins IS, DS, or PS

Cl XTAL1/CLKIN R READY
CO CLKOUT RD Read cycle or RD
D D[15:0] RS RESET pin RS
INT XINT1, XINT2 W Write cycle or WE

Lowercase subscripts and their meanings: Letters and symbols and their meanings:
a access time H High
c cycle time (period) L Low
d delay time V Valid
f fall time X Unknown, changing, or don’t care level
h hold time Z High impedance
r rise time
su setup time
t transition time
v valid time
w pulse duration (width)

general notes on timing

All output signals from the 240xA devices (including CLKOUT) are derived from an internal clock such that all
output transitions for a given half-cycle occur with a minimum of skewing relative to each other.
The signal combinations shown in the following timing diagrams may not necessarily represent actual cycles.
For actual cycle examples, see the appropriate cycle description section of this data sheet.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 79

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external reference crystal/clock with PLL circuit enabled

timing parameters with the PLL circuit enabled

PARAMETER MIN MAX UNIT
Resonator 4 13
fx Input clock frequency† Crystal 4 20 MHz
CLKIN 4 20
† Input frequency should be adjusted (CLK PS bits in SCSR1 register) such that CLKOUT = 40 MHz maximum, 4 MHz minimum.

switching characteristics over recommended operating conditions [H = 0.5 tc(CO)] (see Figure 27)
PARAMETER PLL MODE MIN TYP MAX UNIT
tc(CO) Cycle time, CLKOUT ×4 mode† 25 ns
tf(CO) Fall time, CLKOUT 4 ns
tr(CO) Rise time, CLKOUT 4 ns
tw(COL) Pulse duration, CLKOUT low H −3 H H +3 ns
tw(COH) Pulse duration, CLKOUT high H −3 H H +3 ns
tt Transition time, PLL synchronized after RS pin high 4096tc(Cl) ns
† Input frequency should be adjusted (CLK PS bits in SCSR1 register) such that CLKOUT = 40 MHz maximum, 4 MHz minimum.

timing requirements (see Figure 27)

MIN MAX UNIT
tc(Cl) Cycle time, XTAL1/CLKIN 250 ns
tf(Cl) Fall time, XTAL1/CLKIN 5 ns
tr(Cl) Rise time, XTAL1/CLKIN 5 ns
tw(CIL) Pulse duration, XTAL1/CLKIN low as a percentage of tc(Cl) 40 60 %
tw(CIH) Pulse duration, XTAL1/CLKIN high as a percentage of tc(Cl) 40 60 %

tc(CI)
tw(CIH)
tf(Cl) tr(Cl)

tw(CIL)
XTAL1/CLKIN

tw(COH)
tf(CO)
tc(CO) tw(COL) tr(CO)

CLKOUT

Figure 27. CLKIN-to-CLKOUT Timing with PLL and External Clock in ×4 Mode

80 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

RS timing
timing requirements for a reset [H = 0.5tc(CO)] (see Figure 28 and Figure 29)
MIN NOM MAX UNIT
tw(RSL) Pulse duration, stable CLKIN to RS high 8tc(CI)† cycles
tw(RSL2) Pulse duration, RS low 8tc(CI) cycles
tp PLL lock-up time 4096tc(CI) cycles
td(EX) Delay time, reset vector executed after PLL lock time 36H ns
† During power-on reset, the device can continue to hold the RS pin low for another 128 CLKIN cycles.

VDD/VDDO

tp td(EX)
tw(RSL)
RS

CLKIN

XTAL1
(See Note B) tOSCST
(See Note C)

BOOT_EN/XF BOOT_EN XF

CLKOUT

Hi-Z (See Note D)

I/Os Code-Dependent

Address/
Data/ Address/Data/Control Valid
Control
NOTES: A. Be certain that the emulation logic is reset before de-asserting the device reset. That is, TRST of the device is not driven high before
the device reset is de-asserted. This is applicable to XDS510, XDS510PP, and XDS510PP+ class of emulators. New
generation emulators such as SPI515 and XDS510 USB emulators have built-in protection mechanism to take care of this
requirement.
B. XTAL1 refers to the internal oscillator clock if on-chip oscillator is used.
C. tOSCST is the oscillator start-up time, which is dependent on crystal/resonator and board design.
D. All I/Os contain a clamp to VDD. Inputs of approximately 0.7 V above VDD will cause the I/O to sink current. I/Os containing pullups
or pulldowns will always sink/source a small amount of current once powered.

Figure 28. Power-on Reset (See Note A)

XDS510PP+, SP515, and XDS510 USB are trademarks of Spectrum Digital.

XDS510 and XDS510PP, are trademarks of Texas Instruments.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 81

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

RS timing (continued)

td(EX)
tp
tw(RSL2)
RS

CLKIN

XTAL1†

BOOT_EN BOOT_EN XF
/XF

CLKOUT

Hi-Z
I/Os Code-Dependent

Address/
Data/ Address/Data/Control Valid
Control
† XTAL1 refers to internal oscillator clock if on-chip oscillator is used.

Figure 29. Warm Reset

82 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

RS timing (continued)
switching characteristics over recommended operating conditions for a reset [H = 0.5tc(CO)]
(see Figure 30)
PARAMETER MIN MAX UNIT
tw(RSL1) Pulse duration, RS low† 128tc(CI) ns
td(EX) Delay time, reset vector executed after PLL lock time 36H ns
tp PLL lock time (input cycles) 4096tc(CI) ns
† The parameter tw(RSL1) refers to the time RS is an output.

td(EX)
tp
tw(RSL1)
RS

CLKIN

XTAL1†

BOOT_EN BOOT_EN XF
/XF

CLKOUT

Hi-Z
I/Os Code-Dependent

Address/
Data/ Address/Data/Control Valid
Control
† XTAL1 refers to internal oscillator clock if on-chip oscillator is used.

Figure 30. Watchdog Initiated Reset

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 83

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

low-power mode timing

switching characteristics over recommended operating conditions [H = 0.5tc(CO)]

(see Figure 31, Figure 32, and Figure 33)
PARAMETER LOW-POWER MODES MIN TYP MAX UNIT

Delay time, CLKOUT switching to IDLE1 LPM0 12 × tc(CO)

td(WAKE-A) ns
program execution resume IDLE2 LPM1 15 × tc(CO)
Delay time, Idle instruction executed to
td(IDLE-COH) IDLE2 LPM1 4tc(CO) ns
CLKOUT high
Delay time, wakeup interrupt OSC start-up
td(WAKE-OSC) ms
asserted to oscillator running HALT time
LPM2
Delay time, Idle instruction executed to {PLL/OSC power down}
td(IDLE-OSC) 4tc(CO) ns
oscillator power off
td(EX) Delay time, reset vector executed after PLL lock time 36H ns

td(WAKE−A)

A0−A15

CLKOUT

WAKE INT†

† WAKE INT can be any valid interrupt or RESET.

Figure 31. IDLE1 Entry and Exit Timing − LPM0

td(IDLE−COH)

A0−A15

CLKOUT

WAKE INT†
td(WAKE−A)
† WAKE INT can be any valid interrupt or RESET.
Figure 32. IDLE2 Entry and Exit Timing − LPM1

td(EX)
tp
A0−A15

td(IDLE−OSC)
td(IDLE−COH)

CLKOUT
td(WAKE−OSC)
tw(RSL)

RESET

Figure 33. HALT Mode − LPM2

84 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

LPM2 wakeup timing

switching characteristics over recommended operating conditions (see Figure 34)

PARAMETER MIN MAX UNIT

Delay time, PDPINTA low to PWM if bit 6 of SCSR2 = 0 (6 + 1)tc(CO) + 12† ns

td(PDP-PWM)HZ
high-impedance state if bit 6 of SCSR2 = 1 (12+ 1)tc(CO) + 12† ns
Delay time, INT low/high to interrupt-vector
td(INT) 10tc(CO) + tw(PDP−WAKE) ns
fetch
† Includes i/p qualifier cycles plus synchronization plus propagation delay

timing requirements (see Figure 34)

MIN MAX UNIT
if bit 6 of SCSR2 = 0 6tc(CO)
tw(PDP−WAKE)‡ Pulse duration
duration, PDPINTA input low ns
if bit 6 of SCSR2 = 1 12tc(CO)
tp PLL lock-up time 4096tc(CI) cycles
‡ This is different from 240x devices.

XTAL1 Oscillator Disabled

tOSC†
tp

CLKIN

CLKOUT‡

tw(PDP−WAKE)

PDPINTx

td(PDP-PWM)HZ

PWM

td(INT)

CPU IDLE State (LPM2) Interrupt Vector§ or

CPU Status Next Instruction¶
† tOSC is the oscillator start-up time.
‡ CLKOUT frequency after LPM2 wakeup will be the same as that upon entering LPM2 (x4 shown as an example).
§ PDPINTx interrupt vector, if PDPINTx interrupt is enabled.
¶ If PDPINTx interrupt is disabled.

Figure 34. LPM2 Wakeup Using PDPINTx

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 85

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

XF, BIO, and MP/MC timing

switching characteristics over recommended operating conditions (see Figure 35)

PARAMETER MIN MAX UNIT
td(XF) Delay time, CLKOUT high to XF high/low −3 7 ns

timing requirements (see Figure 35)

MIN MAX UNIT
tsu(BIO)CO Setup time, BIO or MP/MC low before CLKOUT low 0 ns
th(BIO)CO Hold time, BIO or MP/MC low after CLKOUT low 19 ns

CLKOUT

td(XF)

XF

tsu(BIO)CO th(BIO)CO

BIO,
MP/MC

Figure 35. XF and BIO Timing

86 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

TIMING EVENT MANAGER INTERFACE

PWM timing
PWM refers to all PWM outputs on EVA and EVB.

switching characteristics over recommended operating conditions for PWM timing

[H = 0.5tc(CO)] (see Figure 36)
PARAMETER MIN MAX UNIT
tw(PWM)† Pulse duration, PWMx output high/low 2H+5 ns
td(PWM)CO Delay time, CLKOUT low to PWMx output switching 15 ns
† PWM outputs may be 100%, 0%, or increments of tc(CO) with respect to the PWM period.

timing requirements‡ [H = 0.5tc(CO)] (see Figure 37)

MIN MAX UNIT
tw(TMRDIR) Pulse duration, TMRDIR low/high 4H+5 ns
tw(TMRCLK) Pulse duration, TMRCLK low as a percentage of TMRCLK cycle time 40 60 %
twh(TMRCLK) Pulse duration, TMRCLK high as a percentage of TMRCLK cycle time 40 60 %
tc(TMRCLK) Cycle time, TMRCLK 4  tc(CO) ns
‡ Parameter TMRDIR is equal to the pin TDIRx, and parameter TMRCLK is equal to the pin TCLKINx.

CLKOUT

td(PWM)CO
tw(PWM)

PWMx

Figure 36. PWM Output Timing

CLKOUT

tw(TMRDIR)

TMRDIR†

† Parameter TMRDIR is equal to the pin TDIRx.

Figure 37. TMRDIR Timing

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 87

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

capture and QEP timing

CAP refers to all QEP and capture input pins.

timing requirements (see Figure 38)

MIN MAX UNIT
if bit 6 of SCSR2 = 0 6tc(CO)
tw(CAP)† Pulse duration
duration, CAPx input low/high ns
if bit 6 of SCSR2 = 1 12tc(CO)
† This is different from 240x devices.

CLKOUT

tw(CAP)

CAPx

Figure 38. Capture Input and QEP Timing

88 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

interrupt timing
INT refers to XINT1 and XINT2. PDP refers to PDPINTx.

switching characteristics over recommended operating conditions (see Figure 39)

PARAMETER MIN MAX UNIT

Delay time, PDPINTA low to PWM if bit 6 of SCSR2 = 0 (6 + 1)tc(CO) + 12† ns

td(PDP-PWM)HZ
high-impedance state if bit 6 of SCSR2 = 1 (12+ 1)tc(CO) + 12† ns
Delay time, INT low/high to interrupt-vector
td(INT) 10tc(CO) + tW (INT) ns
fetch
† Includes i/p qualifier cycles plus synchronization plus propagation delay

timing requirements (see Figure 39)

MIN MAX UNIT
if bit 6 of SCSR2 = 0 6tc(CO)
tw(INT)† Pulse duration
duration, INT input low/high ns
if bit 6 of SCSR2 = 1 12tc(CO)
if bit 6 of SCSR2 = 0 6tc(CO)
tw(PDP)† Pulse duration,
duration PDPINTx input low ns
if bit 6 of SCSR2 = 1 12tc(CO)
† This is different from 240x devices.

CLKOUT

tw(PDP)

PDPINTx

td(PDP-PWM)HZ

PWM†

tw(INT)

XINT1, XINT2

td(INT)

A0−A15 Interrupt Vector

† PWM refers to all the PWM pins in the device (i.e., PWMn and TnPWM pins). The state of the PWM pins after PDPINTx is taken
high depends on the state of the FCOMPOE bit.

Figure 39. External Interrupts Timing

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 89

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

general-purpose input/output timing

switching characteristics over recommended operating conditions (see Figure 40)

PARAMETER MIN MAX UNIT
td(GPO)CO Dela time
Delay time, CLKOUT lo
low to GPIO low/high
lo /high All GPIOs 9 ns
tr(GPO) Rise time, GPIO switching low to high All GPIOs 8 ns
tf(GPO) Fall time, GPIO switching high to low All GPIOs 6 ns

timing requirements [H = 0.5tc(CO)] (see Figure 41)

MIN MAX UNIT
tw(GPI) Pulse duration, GPI high/low 2H+15 ns

CLKOUT

td(GPO)CO

GPIO

tr(GPO)
tf(GPO)

Figure 40. General-Purpose Output Timing

CLKOUT

tw(GPI)

GPIO

Figure 41. General-Purpose Input Timing

90 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 SPI MASTER MODE TIMING PARAMETERS

SPI master mode timing information is listed in the following tables.

SPI master mode external timing parameters (clock phase = 0)†‡ (see Figure 42)
SPI WHEN (SPIBRR + 1) IS EVEN SPI WHEN (SPIBRR + 1)
NO. OR SPIBRR = 0 OR 2 IS ODD AND SPIBRR > 3 UNIT
MIN MAX MIN MAX
1 tc(SPC)M Cycle time, SPICLK 4tc(CO) 128tc(CO) 5tc(CO) 127tc(CO) ns

TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A

Pulse duration, SPICLK high

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A

tw(SPCH)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M −0.5tc(CO) −10 0.5tc(SPC)M −0.5tc(CO)
(clock polarity = 0)
2§ ns
Pulse duration, SPICLK low
tw(SPCL)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M −0.5tc(CO) −10 0.5tc(SPC)M −0.5tc(CO)
(clock polarity = 1)
Pulse duration, SPICLK low
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

tw(SPCL)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M + 0.5tc (CO)−10 0.5tc(SPC)M + 0.5tc(CO)

(clock polarity = 0)
3§ ns
Pulse duration, SPICLK high
tw(SPCH)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M + 0.5tc (CO)−10 0.5tc(SPC)M + 0.5tc(CO)
(clock polarity = 1)
Delay time, SPICLK high to
td(SPCH-SIMO)M − 10 10 − 10 10
SPISIMO valid (clock polarity = 0)
4§ ns
Delay time, SPICLK low to
td(SPCL-SIMO)M − 10 10 − 10 10
SPISIMO valid (clock polarity = 1)
Valid time, SPISIMO data valid after
tv(SPCL-SIMO)M 0.5tc(SPC)M −10 0.5tc(SPC)M + 0.5tc(CO) −10
SPICLK low (clock polarity =0)
5§ ns
Valid time, SPISIMO data valid after
tv(SPCH-SIMO)M 0.5tc(SPC)M −10 0.5tc(SPC)M + 0.5tc(CO) −10
SPICLK high (clock polarity =1)
Setup time, SPISOMI before
tsu(SOMI-SPCL)M 0 0
SPICLK low (clock polarity = 0)

SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

8§ ns
Setup time, SPISOMI before
tsu(SOMI-SPCH)M 0 0
SPICLK high (clock polarity = 1)
Valid time, SPISOMI data valid after
tv(SPCL-SOMI)M 0.25tc(SPC)M −10 0.5tc(SPC)M −0.5tc(CO) −10
SPICLK low (clock polarity = 0)
9§ ns
Valid time, SPISOMI data valid after
tv(SPCH-SOMI)M 0.25tc(SPC)M −10 0.5tc(SPC)M −0.5tc (CO)−10

DSP CONTROLLERS
SPICLK high (clock polarity = 1)
† The MASTER / SLAVE bit (SPICTL.2) is set and the CLOCK PHASE bit (SPICTL.3) is cleared.
‡ tc = system clock cycle time = 1/CLKOUT = tc(CO)
§ The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).
91
TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PARAMETER MEASUREMENT INFORMATION

1
SPICLK
(clock polarity = 0)

SPICLK
(clock polarity = 1)

4
5

SPISIMO Master Out Data Is Valid

Master In Data
SPISOMI
Must Be Valid

SPISTE†

† The SPISTE signal is active before the SPI communication stream starts; the SPISTE signal remains active until the SPI
communication stream is complete.

Figure 42. SPI Master Mode External Timing (Clock Phase = 0)

92 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 SPI master mode external timing parameters (clock phase = 1)†‡ (see Figure 43)
SPI WHEN (SPIBRR + 1) IS EVEN SPI WHEN (SPIBRR + 1)
NO. OR SPIBRR = 0 OR 2 IS ODD AND SPIBRR > 3 UNIT
MIN MAX MIN MAX
1 tc(SPC)M Cycle time, SPICLK 4tc(CO) 128tc(CO) 5tc(CO) 127tc(CO) ns
Pulse duration, SPICLK high
tw(SPCH)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M −0.5tc (CO)−10 0.5tc(SPC)M − 0.5tc(CO)
(clock polarity = 0)
2§ ns
Pulse duration, SPICLK low
tw(SPCL)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M −0.5tc (CO)−10 0.5tc(SPC)M −0.5tc(CO)
(clock polarity = 1)

TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A

Pulse duration, SPICLK low

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A

tw(SPCL)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M + 0.5tc(CO) −10 0.5tc(SPC)M + 0.5tc(CO)
(clock polarity = 0)
3§ ns
Pulse duration, SPICLK high
tw(SPCH)M 0.5tc(SPC)M −10 0.5tc(SPC)M 0.5tc(SPC)M + 0.5tc(CO) −10 0.5tc(SPC)M + 0.5tc(CO)
(clock polarity = 1)
Setup time, SPISIMO data
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

tsu(SIMO-SPCH)M valid before SPICLK high 0.5tc(SPC)M −10 0.5tc(SPC)M −10

(clock polarity = 0)
6§ ns
Setup time, SPISIMO data
tsu(SIMO-SPCL)M valid before SPICLK low 0.5tc(SPC)M −10 0.5tc(SPC)M −10
(clock polarity = 1)
Valid time, SPISIMO data
tv(SPCH-SIMO)M valid after SPICLK high 0.5tc(SPC)M −10 0.5tc(SPC)M −10
(clock polarity =0)
7§ ns
Valid time, SPISIMO data
tv(SPCL-SIMO)M valid after SPICLK low 0.5tc(SPC)M −10 0.5tc(SPC)M −10
(clock polarity =1)
Setup time, SPISOMI before
tsu(SOMI-SPCH)M SPICLK high 0 0
(clock polarity = 0)

SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

10§ ns
Setup time, SPISOMI before
tsu(SOMI-SPCL)M SPICLK low 0 0
(clock polarity = 1)
Valid time, SPISOMI data
tv(SPCH-SOMI)M valid after SPICLK high 0.25tc(SPC)M −10 0.5tc(SPC)M −10
(clock polarity = 0)

DSP CONTROLLERS
11§ ns
Valid time, SPISOMI data
tv(SPCL-SOMI)M valid after SPICLK low 0.25tc(SPC)M −10 0.5tc(SPC)M −10
(clock polarity = 1)
† The MASTER / SLAVE bit (SPICTL.2) is set and the CLOCK PHASE bit (SPICTL.3) is set.
‡ tc = system clock cycle time = 1/CLKOUT = tc(CO)
§ The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).
93
TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

PARAMETER MEASUREMENT INFORMATION

1
SPICLK
(clock polarity = 0)

SPICLK
(clock polarity = 1)

SPISIMO Master Out Data Is Valid Data Valid

10

11

Master In Data
SPISOMI
Must Be Valid

SPISTE†

† The SPISTE signal is active before the SPI communication stream starts; the SPISTE signal remains active until the SPI
communication stream is complete.

Figure 43. SPI Master Mode External Timing (Clock Phase = 1)

94 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

SPI slave mode timing parameters

Slave mode timing information is listed in the following tables.

SPI slave mode external timing parameters (clock phase = 0)†‡ (see Figure 44)
NO. MIN MAX UNIT
12 tc(SPC)S Cycle time, SPICLK 4tc(CO)‡ ns
tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 0) 0.5tc(SPC)S −10 0.5tc(SPC)S
13§ ns
tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 1) 0.5tc(SPC)S −10 0.5tc(SPC)S
tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 0) 0.5tc(SPC)S −10 0.5tc(SPC)S
14§ ns
tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 1) 0.5tc(SPC)S −10 0.5tc(SPC)S
Delay time, SPICLK high to SPISOMI valid
td(SPCH-SOMI)S 0.375tc(SPC)S −10
15§ (clock polarity = 0) ns
td(SPCL-SOMI)S Delay time, SPICLK low to SPISOMI valid (clock polarity = 1) 0.375tc(SPC)S −10
Valid time, SPISOMI data valid after SPICLK low
tv(SPCL-SOMI)S 0.75tc(SPC)S
(clock polarity =0)
16§ ns
Valid time, SPISOMI data valid after SPICLK high
tv(SPCH-SOMI)S 0.75tc(SPC)S
(clock polarity =1)
tsu(SIMO-SPCL)S Setup time, SPISIMO before SPICLK low (clock polarity = 0) 0
19§ ns
tsu(SIMO-SPCH)S Setup time, SPISIMO before SPICLK high (clock polarity = 1) 0
Valid time, SPISIMO data valid after SPICLK low
tv(SPCL-SIMO)S 0.5tc(SPC)S
(clock polarity = 0)
20§ ns
Valid time, SPISIMO data valid after SPICLK high
tv(SPCH-SIMO)S 0.5tc(SPC)S
(clock polarity = 1)
† The MASTER / SLAVE bit (SPICTL.2) is cleared and the CLOCK PHASE bit (SPICTL.3) is cleared.
‡ tc = system clock cycle time = 1/CLKOUT = tc(CO)
§ The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 95

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

SPI slave mode external timing parameters (continued)

12
SPICLK
(clock polarity = 0)

13

14

SPICLK
(clock polarity = 1)

15
16

SPISOMI SPISOMI Data Is Valid

19

20

SPISIMO Data
SPISIMO
Must Be Valid

SPISTE†

† The SPISTE signal must be active before the SPI communication stream starts; the SPISTE signal must remain active until
the SPI communication stream is complete.

Figure 44. SPI Slave Mode External Timing (Clock Phase = 0)

96 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

SPI slave mode timing parameters (continued)

SPI slave mode external timing parameters (clock phase = 1)†‡ (see Figure 45)
NO. MIN MAX UNIT
12 tc(SPC)S Cycle time, SPICLK 8tc(CO) ns
tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 0) 0.5tc(SPC)S −10 0.5tc(SPC)S
13§ ns
tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 1) 0.5tc(SPC)S −10 0.5tc(SPC)S
tw(SPCL)S Pulse duration, SPICLK low (clock polarity = 0) 0.5tc(SPC)S −10 0.5tc(SPC)S
14§ ns
tw(SPCH)S Pulse duration, SPICLK high (clock polarity = 1) 0.5tc(SPC)S −10 0.5tc(SPC)S
tsu(SOMI-SPCH)S Setup time, SPISOMI before SPICLK high (clock polarity = 0) 0.125tc(SPC)S
17§ ns
tsu(SOMI-SPCL)S Setup time, SPISOMI before SPICLK low (clock polarity = 1) 0.125tc(SPC)S
Valid time, SPISOMI data valid after SPICLK high
tv(SPCH-SOMI)S 0.75tc(SPC)S
(clock polarity =0)
18§ ns
Valid time, SPISOMI data valid after SPICLK low
tv(SPCL-SOMI)S 0.75tc(SPC)S
(clock polarity =1)
tsu(SIMO-SPCH)S Setup time, SPISIMO before SPICLK high (clock polarity = 0) 0
21§ ns
tsu(SIMO-SPCL)S Setup time, SPISIMO before SPICLK low (clock polarity = 1) 0
Valid time, SPISIMO data valid after SPICLK high
tv(SPCH-SIMO)S 0.5tc(SPC)S
(clock polarity = 0)
22§ ns
Valid time, SPISIMO data valid after SPICLK low
tv(SPCL-SIMO)S 0.5tc(SPC)S
(clock polarity = 1)
† The MASTER / SLAVE bit (SPICTL.2) is cleared and the CLOCK PHASE bit (SPICTL.3) is set.
‡ tc = system clock cycle time = 1/CLKOUT = tc(CO)
§ The active edge of the SPICLK signal referenced is controlled by the CLOCK POLARITY bit (SPICCR.6).

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 97

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

SPI slave mode timing parameters (continued)

12
SPICLK
(clock polarity = 0)

13

14

SPICLK
(clock polarity = 1)

17

18

SPISOMI SPISOMI Data Is Valid Data Valid

21

22

SPISIMO SPISIMO Data

Must Be Valid

SPISTE†

† The SPISTE signal must be active before the SPI communication stream starts; the SPISTE signal must remain active until
the SPI communication stream is complete.

Figure 45. SPI Slave Mode External Timing (Clock Phase = 1)

98 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface read timing

switching characteristics over recommended operating conditions for an external memory

interface read at 40 MHz [H = 0.5tc(CO)] (see Figure 46)
PARAMETER MIN MAX UNIT
td(COL-CNTL) Delay time, CLKOUT low to control valid 4 ns
td(COL-CNTH) Delay time, CLKOUT low to control inactive 5 ns

td(COL-A)RD Delay time, CLKOUT low to address valid 8 ns

td(COH-RDL) Delay time, CLKOUT high to RD strobe active 5 ns

td(COL-RDH) Delay time, CLKOUT low to RD strobe inactive high −8 1 ns

td(COL-SL) Delay time, CLKOUT low to STRB strobe active low 5 ns

td(COL-SH) Delay time, CLKOUT low to STRB strobe inactive high 6 ns

td(WRN) Delay time, W/R going low to R/W rising 5 ns

th(A)COL Hold time, address valid after CLKOUT low 2 ns

tsu(A)RD Setup time, address valid before RD strobe active low H−7 ns

th(A)RD Hold time, address valid after RD strobe inactive high 0 ns

timing requirements [H = 0.5tc(CO)] (see Figure 46)

MIN MAX UNIT
ta(A) Access time, read data from address valid 2H −10 ns
ta(RD) Access time, read data from RD low H−7 ns
tsu(D)RD Setup time, read data before RD strobe inactive high 8 ns
th(D)RD Hold time, read data after RD strobe inactive high 0 ns
th(AIV-D) Hold time, read data after address invalid 0 ns

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 99

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface read timing (continued)

CLKOUT

td(COL−CNTL)

td(COL−CNTH)

PS, DS,
IS
td(COL−A)RD
td(COL−A)RD

th(A)COL

th(A)COL

A[0:15]

td(COH−RDL)
td(COL−RDH)

ta(A)

td(COH−RDL)

td(COL−RDH)

th(A)RD

RD

th(AIV−D)
tsu(A)RD
ta(A)
tsu(D)RD

th(D)RD
ta(RD) tsu(D)RD
td(WRN)
th(D)RD
W/R

R/W

D[0:15]

td(COL−SL)

td(COL−SH)

STRB

Figure 46. Memory Interface Read/Read Timings

100 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface write timing

switching characteristics over recommended operating conditions for an external memory

interface write at 40 MHz [H = 0.5tc(CO)] (see Figure 47)
PARAMETER MIN MAX UNIT
td(COH-CNTL) Delay time, CLKOUT high to control valid 4 ns
td(COH-CNTH) Delay time, CLKOUT high to control inactive 5 ns
td(COH-A)W Delay time, CLKOUT high to address valid 10 ns
td(COH-RWL) Delay time, CLKOUT high to R/W low 6 ns
td(COH-RWH) Delay time, CLKOUT high to R/W high 6 ns
td(COL-WL) Delay time, CLKOUT low to WE strobe active low 6 ns
td(COL-WH) Delay time, CLKOUT low to WE strobe inactive high 6 ns
ten(D)COL Enable time, data bus driven from CLKOUT low −3 ns
td(COL-SL) Delay time, CLKOUT low to STRB active low 6 ns
td(COL-SH) Delay time, CLKOUT low to STRB inactive high 6 ns
td(WRN) Delay time, R/W rising to W/R going low 5 ns

th(A)COLW Hold time, address valid after CLKOUT low −5 ns

tsu(A)W Setup time, address valid before WE strobe active low H−9 ns
tsu(D)W Setup time, write data before WE strobe inactive high 2H−17 ns
th(D)W Hold time, write data after WE strobe inactive high 2 ns
tdis(W-D) Disable time, data bus high impedance from WE high 5 ns

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 101

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface write timing (continued)

CLKOUT
td(COH−CNTL)
td(COH−CNTH)
td(COH−CNTL)

PS, DS, IS
td(COH−A)W
th(A)COLW

A[0:15]

td(COH−RWL)
td(COH−RWH)
tsu(A)W
R/W

td(WRN)

W/R

td(COL−WH) td(COL−WH)
td(COL−WL)
td(COL−WL)

WE
tdis(W-D)
ten(D)COL
ten(D)COL
tsu(D)W
tsu(D)W
th(D)W
th(D)W

D[0:15]

td(COL−SL)
td(COL−SL)
td(COL−SH) td(COL−SH)

STRB

ENA_144

CLKOUT

2H 2H

VIS_OE

NOTE A: VIS_OE will be visible at pin 97 of LF2407A when ENA_144 is high along with BVIS bits (10,9 of WSGR register − FFFFh@I/O) set to
10 or 11. CLKOUT and VIS_OE indicate internal memory write cycles (program/data). During VIS_OE cycles, the external bus will be
driven. CLKOUT is to be used along with VIS_OE for trace capabilities.
Figure 47. Memory Interface Write/Write Timings

102 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface ready-on-read timing

switching characteristics over recommended operating conditions for an external memory

interface ready-on-read (see Figure 48)
PARAMETER MIN MAX UNIT
td(COL-A)RD Delay time, CLKOUT low to address valid 8 ns

timing requirements for an external memory interface ready-on-read (see Figure 48)
MIN MAX UNIT
th(RDY)COH Hold time, READY after CLKOUT high −3 ns
tsu(D)RD Setup time, read data before RD strobe inactive high 8 ns
tv(RDY)ARD Valid time, READY after address valid on read −2 ns
tsu(RDY)COH Setup time, READY before CLKOUT high 22 ns

CLKOUT

Wait Cycle
PS, DS, IS

td(COL−A)RD

A[0:15]

RD

tsu(D)RD

D[0:15]

STRB

tv(RDY)ARD

th(RDY)COH

READY†

tsu(RDY)COH

† The WSGR register must be programmed before the READY pin can be used. See the READY pin description for more details.

Figure 48. Ready-on-Read Timings

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 103

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface ready-on-read timing (continued)

timing requirements for an external memory interface ready-on-read with one software wait state
and one external wait state (see Figure 49)
MIN MAX UNIT
th(RDY)COH Hold time, READY after CLKOUT high H − 2.5 ns
tsu(RDY)COH Setup time, READY before CLKOUT high H − 9.5 ns
td(COL-A)RD Delay time, CLKOUT low to address valid 8 ns

SW = 1 cycle EXW = 1 cycle Read Cycle

CLKOUT

PS, DS, IS

td(COL-A)RD

A[0:15]

W/R

R/W

D[0:15]

STRB

th(RDY)COH
tsu(RDY)COH

READY

RD

Figure 49. Ready-on-Read Timings With One Software Wait (SW) State and
One External Wait (EXW) State

104 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface ready-on-write timing

switching characteristics over recommended operating conditions for an external memory

interface ready-on-write (see Figure 50)
PARAMETER MIN MAX UNIT
td(COH-A)W Delay time, CLKOUT high to address valid 10 ns

timing requirements for an external memory interface ready-on-write [H = 0.5tc(CO)]

(see Figure 50)
MIN MAX UNIT
th(RDY)COH Hold time, READY after CLKOUT high −3 ns
tsu(D)W Setup time, write data before WE strobe inactive high 2H−17 ns
tv(RDY)AW Valid time, READY after address valid on write −3 ns
tsu(RDY)COH Setup time, READY before CLKOUT high 22 ns

CLKOUT

Wait Cycle
PS, DS, IS

td(COH−A)W

A[0:15]

WE

tsu(D)W

D[0:15]

STRB

tv(RDY)AW
tsu(RDY)COH
th(RDY)COH

READY

Figure 50. Ready-on-Write Timings

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 105

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

external memory interface ready-on-write timing (continued)

timing requirements for an external memory interface ready-on-write with one software wait state
and one external wait state (see Figure 51)
MIN MAX UNIT
th(RDY)COH Hold time, READY after CLKOUT high H − 2.5 ns
tsu(RDY)COH Setup time, READY before CLKOUT high H − 9.5 ns
td(COH-A)W Delay time, CLKOUT high to address valid 10 ns

SW = 1 cycle EXW = 1 cycle Write Cycle

CLKOUT

PS, DS, IS

td(COH−A)W

A[0:15]

tsu(RDY)COH
th(RDY)COH

READY

R/W

WE

D[0:15]

STRB

Figure 51. Ready-on-Write Timings With One Software Wait (SW) State and
One External Wait (EXW) State

106 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

10-bit analog-to-digital converter (ADC)

The 10-bit ADC has a separate power bus for its analog circuitry. These pins are referred to as VCCA and VSSA.
The power bus isolation is to enhance ADC performance by preventing digital switching noise of the logic
circuitry that can be present on VSS and VCC from coupling into the ADC analog stage. All ADC specifications
are given with respect to VSSA unless otherwise noted.
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-bit (1024 values)
Monotonic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assured
Output conversion mode . . . . . . . . . . . . . . . . . . . . 000h to 3FFh (000h for VI ≤ VREFLO; 3FFh for VI ≥ VREFHI)
Minimum conversion time (including sample time) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 ns

recommended operating conditions

MIN NOM MAX UNIT
VCCA Analog supply voltage 3.0 3.3 3.6 V
VSSA Analog ground 0 V
VREFHI Analog supply reference source† ‡ VCCA V
VREFLO Analog ground reference source† VSSA V
VAI Analog input voltage, ADCIN00−ADCIN07 VREFLO VREFHI V
† VREFHI and VREFLO must be stable, within ±1/2 LSB of the required resolution, during the entire conversion time.
‡ VREFHI can be from 2.0 V to VCCA; however, the accuracy of the ADC depends on the ground bounce and noise on the target board.

ADC operating frequency

MIN MAX UNIT
ADC operating frequency 4 30 MHz

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 107

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

10-bit analog-to-digital converter (ADC) (continued)

operating characteristics over recommended operating condition ranges†

PARAMETER DESCRIPTION MIN TYP MAX UNIT
VCCA = 3.3 V 10 22 mA
ICCA Analog supply current PLL or OSC power
VCCA = VREFHI = 3.3 V 1 µA
down
IADREFHI VREFHI input current 0.75 1.5 mA
IADCIN Analog input leakage 1 µA

Typical capacitive load on Non-sampling 10

Cai Analog input capacitance pF
analog input pin Sampling 30
td(PU) Delay time, power-up to ADC valid Time to stabilize analog stage after power-up 10 µs
Analog input source impedance needed for
ZAI Analog input source impedance conversions to remain within specifications at min 53 10 Ω
tw(SH)
Zero-offset error "2 LSB
† Absolute resolution = 3.22 mV. At VREFHI = 3.3 V and VREFLO = 0 V, this is one LSB. As VREFHI decreases, VREFLO increases, or both, the LSB
size decreases. Therefore, the absolute accuracy and differential/integral linearity errors in terms of LSBs increase.

EDNL and EINL

PARAMETER DESCRIPTION CLKOUT MIN MAX UNIT
Difference between the actual step width
EDNL‡ Differential nonlinearity error 30 MHz "2 LSB
and the ideal value
Maximum deviation from the best straight
line through the ADC transfer
EINL‡ Integral nonlinearity error 30 MHz "2 LSB
characteristics, excluding the quantization
error
‡ Test conditions: VREFHI = VCCA , VREFLO = VSSA

108 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

10-bit analog-to-digital converter (ADC) (continued)

internal ADC module timing† (see Figure 52)

MIN MAX UNIT
tc(AD) C l time,
Cycle ti ADC prescaled
al d clock
l k 33
33.3
3 ns
Pulse duration
duration, total sample/hold and
tw(SHC) 500 ns
conversion ti ‡
i time
td(SOC-SH) Delay time, start of conversion to beginning of sample and hold 2tc(CO) ns
tw(SH) Pulse duration, sample and hold time 2tc(AD)§ 32tc(AD) ns
tw(C) Pulse duration, total conversion time 10tc(AD) ns
td(EOC) Delay time, end of conversion to data loaded into result register 2tc(CO) ns
td(ADCINT) Delay time, ADC flag to ADC interrupt 2tc(CO) ns
† The ADC timing diagram represents a typical conversion sequence. See the ADC chapter in the TMS320LF/LC240xA DSP Controllers Reference
Guide: System and Peripherals (literature number SPRU357) for more details.
‡ The total sample/hold and conversion time is determined by the summation of t
d(SOC-SH), tw(SH), tw(C), and td(EOC) .
§ Can be varied by ACQ Prescaler bits in the ADCTRL1 register

tc(AD)

Bit Converted 9 8 7 6 5 4 3 2 1 0

ADC Clock

Á
Analog Input
Á Á
Á tw(C)

EOC/Convert

tw(SH)
Internal Start/
Sample Hold

td(SOC−SH)
Start of Convert

td(EOC)
tw(SHC)

XFR to RESULTn
td(ADCINT)

ADC Interrupt

Figure 52. Analog-to-Digital Internal Module Timing

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 109

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

Flash parameters @40 MHz CLOCKOUT†

PARAMETER MIN TYP MAX UNIT
Time/Word (16-bit) 30 µs
Clear/Programming time‡ Time/4K Sector 130 ms
Time/12K Sector 400 ms
Time/4K Sector 350 ms
Erase time‡
Time/12K Sector 1 s
Indicates the typical/maximum current consumption during the
ICCP (VCCP pin current) 5 15 mA
Clear-Erase-Program (C-E-P) cycle
† TI releases upgrades to the Flash algorithms for these devices; hence, these typical values are subject to change.
‡ The indicated time does not include the time it takes to load the C-E-P algorithm and the code (to be programmed) onto on-chip RAM. The values
specified are when VDD = 3.3 V and VCCP = 5 V, and any deviation from these values could affect the timing parameters. Aging and process variance
could also impact the timing parameters.
migrating from LF240xA (Flash) devices to LC240xA (ROM) devices
When migrating from a Flash to a ROM device, be sure to review this section for a list of important differences
that should be considered. Customer applications should consider these differences in their design, prior to
ROM code submission. Due to the fact that the flash and ROM are different silicon, the following parameters
may be similar but not exactly identical. Refer to the respective datasheet sections for more detail:
D EMI/ESD behavior
D ADC performance
D Current consumption
D Device ID register values
Table 18 outlines the differences between the LF240xA (Flash) devices and the LC240xA (ROM) devices.

Table 18. Differences Between LF240xA (Flash) Devices and LC240xA (ROM) Devices
FEATURE LF2406A LC2406A LC2404A LF2403A LC2403A LF2402A LC2402A
On-chip Flash or ROM (see Note 1) 32K 32K 16K 16K 16K 8K 6K
Single-Access RAM (SARAM)
2K 2K 1K 512 512 512 —
(16-bit words)
Boot ROM Yes — — Yes Yes Yes —
Event Managers EVA, EVB EVA, EVB EVA, EVB EVA EVA EVA EVA
ADC Channels 16 16 16 8 8 8 8
SPI Yes Yes Yes Yes§ Yes§ — —
CAN Yes Yes — Yes Yes — —
GPIO Pins 41 41 41 21 21 21 21
BIO Pin Yes Yes Yes — — — —
TDIRx Pin Yes Yes Yes — — — —
External Interrupts 5 5 5 3 3 3 3
Access to External Memory Spaces¶ See Note 2 See Note 3 See Note 3 See Note 2 See Note 3 See Note 2 See Note 3
VCCP Pin Functionality VCCP No Connect No Connect VCCP No Connect VCCP No Connect
100-pin 100-pin 100-pin 64-pin 64-pin 64-pin 64-pin
Packaging
PZ PZ PZ PAG PAG PG PG, PAG
§The SPISTE pin is not available on the LF2403A. See the SPI Slave Mode Operation in LF2403A section.
¶Application code should NOT access Illegal/Reserved addresses.
NOTES: 1. The last 64 words of ROM are reserved for TI internal testing. User code should not occupy these locations. See the device memory
map for details.
2. Access to external Program, Data, and I/O space is considered illegal and would assert an NMI.
3. The external Program and I/O spaces are implemented as “reserved” addresses and any access will not assert an NMI. However,
the external data memory space is illegal.

110 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

migrating from 240x devices to 240xA devices

This section highlights the new features/migration issues of the 240xA devices (as compared to the 240x family)
and describes the impact these features/issues have on user applications.
maximum clock speed
240xA devices can operate at a maximum speed of 40 MHz compared to the 30-MHz operation of 240x devices.
This change in clock speed warrants a change in the register contents of all the peripherals. For example, to
maintain the same baud rate, the divisor values that are loaded to the SPI, SCI, and CAN registers must be
recalculated.
code security module
240xA devices incorporate a “code security module” which protects the contents of program memory from
unauthorized duplication. Passwords stored in password locations (PWL) 0040h to 0043h are used for this
purpose. Even if the code is not secured with passwords (i.e., PWL contains FFFFFFFFFFFFFFFFh), the PWL
must still be read to gain access to the program memory contents. Note that locations 0040h to 0043h were
available for user code in the 240x devices, which lack the “code security module”. In 240xA devices, these
locations are reserved for the passwords and are not available for the user code. Even if code security feature
is not used, these locations must be written with all ones. This fact must be borne in mind while submitting ROM
codes to TI.
input-qualifier circuitry
An input-qualifier circuitry qualifies the input signal to the CAP1–6 (QEP1−4), XINT1/2, ADCSOC, and
PDPINTA/B pins in the x240xA devices. The state of the internal input signal will change only after these pins
are high/low for 6 (12) clock edges. The user must hold the pin high/low for 6 (12) cycles to ensure that the device
see the level change. The increase in the pulse width of the signals used to excite these pins must be taken
into account while migrating from the 240x to the 240xA family.
Bit 6 of the SCSR2 register controls whether 6 clock edges (bit 6 = 0) or 12 clock edges (bit 6 = 1) are used
to block 5- or 11-cycle glitches. This bit is a “reserved” bit in 240x devices.
status of the PDPINTx pin
The current status of the PDPINTx pins is now reflected in bit 8 of the COMCONx registers. This bit is a
“reserved” bit in 240x devices.
operation of the IOPC0 pin
At reset, all LF240xA devices come up with the W/R/IOPC0 pin in W/R mode. On devices that lack an external
memory interface (e.g., LF2406A), W/R mode is not functional and MCRB.0 must be set to a 0 if the IOPC0
pin is to be used. The XMIF Hi-Z control bit (bit 4 of the SCSR2 register) is reserved in these devices and must
be written with a zero.
external pulldown resistor for TRST pin
An external pulldown resistor may be needed for the TRST pin in boards that operate in noisy environments.
Refer to the TRST pin description for more details.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 111

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

migrating from LF240x devices to LC240xA devices

When migrating from an “unsecured” Flash device (LF240x) to a “secured” ROM device (LC240xA), two
migration paths have to be taken into consideration:
D Migrating from a 240x device to a 240xA device (see the Migrating From 240x Devices to 240xA Devices
section)
D Migrating from a Flash (LF) device to a ROM (LC) device (see the Migrating From LF240xA (Flash) Devices
to LC240xA (ROM) Devices section)

112 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register description

Table 19 is a collection of all the programmable registers of the LF240xA/LC240xA and is provided as a quick
reference.

Table 19. LF240xA/LC240xA DSP Peripheral Register Description

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
DATA MEMORY SPACE
CPU STATUS REGISTERS
ARP OV OVM 1 INTM DP(8)
ST0
DP(7) DP(6) DP(5) DP(4) DP(3) DP(2) DP(1) DP(0)
ARB CNF TC SXM C 1
ST1
1 1 1 XF 1 1 PM
GLOBAL MEMORY AND CPU INTERRUPT REGISTERS
— — — — — — — —
00004h IMR
— — INT6 MASK INT5 MASK INT4 MASK INT3 MASK INT2 MASK INT1 MASK
00005h Reserved GREG
— — — — — — — —
00006h IFR
— — INT6 FLAG INT5 FLAG INT4 FLAG INT3 FLAG INT2 FLAG INT1 FLAG
SYSTEM REGISTERS
IRQ0.15 IRQ0.14 IRQ0.13 IRQ0.12 IRQ0.11 IRQ0.10 IRQ0.9 IRQ0.8
07010h PIRQR0
IRQ0.7 IRQ0.6 IRQ0.5 IRQ0.4 IRQ0.3 IRQ0.2 IRQ0.1 IRQ0.0
IRQ1.15 IRQ1.14 IRQ1.13 IRQ1.12 IRQ1.11 IRQ1.10 IRQ1.9 IRQ1.8
07011h PIRQR1
IRQ1.7 IRQ1.6 IRQ1.5 IRQ1.4 IRQ1.3 IRQ1.2 IRQ1.1 IRQ1.0
IRQ2.15 IRQ2.14 IRQ2.13 IRQ2.12 IRQ2.11 IRQ2.10 IRQ2.9 IRQ2.8
07012h PIRQR2
IRQ2.7 IRQ2.6 IRQ2.5 IRQ2.4 IRQ2.3 IRQ2.2 IRQ2.1 IRQ2.0
07013h Illegal
IAK0.15 IAK0.14 IAK0.13 IAK0.12 IAK0.11 IAK0.10 IAK0.9 IAK0.8
07014h PIACKR0
IAK0.7 IAK0.6 IAK0.5 IAK0.4 IAK0.3 IAK0.2 IAK0.1 IAK0.0
IAK1.15 IAK1.14 IAK1.13 IAK1.12 IAK1.11 IAK1.10 IAK1.9 IAK1.8
07015h PIACKR1
IAK1.7 IAK1.6 IAK1.5 IAK1.4 IAK1.3 IAK1.2 IAK1.1 IAK1.0
IAK2.15 IAK2.14 IAK2.13 IAK2.12 IAK2.11 IAK2.10 IAK2.9 IAK2.8
07016h PIACKR2
IAK2.7 IAK2.6 IAK2.5 IAK2.4 IAK2.3 IAK2.2 IAK2.1 IAK2.0
07017h Illegal
— CLKSRC LPM1 LPM0 CLK PS2 CLK PS1 CLK PS0 —
07018h SCSR1
ADC CLKEN SCI CLKEN SPI CLKEN CAN CLKEN EVB CLKEN EVA CLKEN — ILLADR
— — — — — — — —
I/P
07019h WD SCSR2
— QUALIFIER XMIF HI Z BOOT_EN MP/MC DON PON
OVERRIDE
CLOCKS
0701Ah
to Illegal
0701Bh
DIN15 DIN14 DIN13 DIN12 DIN11 DIN10 DIN9 DIN8
0701Ch DINR
DIN7 DIN6 DIN5 DIN4 DIN3 DIN2 DIN1 DIN0
0701Dh Illegal
V15 V14 V13 V12 V11 V10 V9 V8
0701Eh PIVR
V7 V6 V5 V4 V3 V2 V1 V0
0701Fh Illegal

Indicates change with respect to the F243/F241, C242 device register maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 113

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
WD CONTROL REGISTERS
07020h
to Illegal
07022h
07023h D7 D6 D5 D4 D3 D2 D1 D0 WDCNTR
07024h Illegal
07025h D7 D6 D5 D4 D3 D2 D1 D0 WDKEY
07026h
to Illegal
07028h
07029h WDFLAG WDDIS WDCHK2 WDCHK1 WDCHK0 WDPS2 WDPS1 WDPS0 WDCR
0702Ah
to Illegal
0703Fh
SERIAL PERIPHERAL INTERFACE (SPI) CONFIGURATION CONTROL REGISTERS
SPI SW CLOCK SPI SPI SPI SPI
07040h — — SPICCR
RESET POLARITY CHAR3 CHAR2 CHAR1 CHAR0
OVERRUN CLOCK MASTER/ SPI INT
07041h — — — TALK SPICTL
INT ENA PHASE SLAVE ENA
RECEIVER
SPI INT TX BUF
07042h OVERRUN — — — — — SPISTS
FLAG FULL FLAG
FLAG
07043h Illegal
SPI BIT SPI BIT SPI BIT SPI BIT SPI BIT SPI BIT SPI BIT
07044h — SPIBRR
RATE 6 RATE 5 RATE 4 RATE 3 RATE 2 RATE 1 RATE 0
07045h Illegal
ERXB15 ERXB14 ERXB13 ERXB12 ERXB11 ERXB10 ERXB9 ERXB8
07046h SPIRXEMU
ERXB7 ERXB6 ERXB5 ERXB4 ERXB3 ERXB2 ERXB1 ERXB0
RXB15 RXB14 RXB13 RXB12 RXB11 RXB10 RXB9 RXB8
07047h SPIRXBUF
RXB7 RXB6 RXB5 RXB4 RXB3 RXB2 RXB1 RXB0
TXB15 TXB14 TXB13 TXB12 TXB11 TXB10 TXB9 TXB8
07048h SPITXBUF
TXB7 TXB6 TXB5 TXB4 TXB3 TXB2 TXB1 TXB0
SDAT15 SDAT14 SDAT13 SDAT12 SDAT11 SDAT10 SDAT9 SDAT8
07049h SPIDAT
SDAT7 SDAT6 SDAT5 SDAT4 SDAT3 SDAT2 SDAT1 SDAT0
0704Ah
to Illegal
0704Eh
SPI SPI SPI
0704Fh — — — — — SPIPRI
PRIORITY SUSP SOFT SUSP FREE

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

114 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
SERIAL COMMUNICATIONS INTERFACE (SCI) CONFIGURATION CONTROL REGISTERS
STOP EVEN/ODD PARITY LOOP BACK ADDR/IDLE SCI SCI SCI
07050h SCICCR
BITS PARITY ENABLE ENA MODE CHAR2 CHAR1 CHAR0
RX ERR
07051h — SW RESET — TXWAKE SLEEP TXENA RXENA SCICTL1
INT ENA
BAUD15
07052h BAUD14 BAUD13 BAUD12 BAUD11 BAUD10 BAUD9 BAUD8 SCIHBAUD
(MSB)
BAUD0
07053h BAUD7 BAUD6 BAUD5 BAUD4 BAUD3 BAUD2 BAUD1 SCILBAUD
(LSB)
RX/BK TX
07054h TXRDY TX EMPTY — — — — SCICTL2
INT ENA INT ENA
07055h RX ERROR RXRDY BRKDT FE OE PE RXWAKE — SCIRXST
07056h ERXDT7 ERXDT6 ERXDT5 ERXDT4 ERXDT3 ERXDT2 ERXDT1 ERXDT0 SCIRXEMU
07057h RXDT7 RXDT6 RXDT5 RXDT4 RXDT3 RXDT2 RXDT1 RXDT0 SCIRXBUF
07058h Illegal
07059h TXDT7 TXDT6 TXDT5 TXDT4 TXDT3 TXDT2 TXDT1 TXDT0 SCITXBUF
0705Ah
to Illegal
0705Eh
SCITX SCIRX SCI SCI
0705Fh — — — — SCIPRI
PRIORITY PRIORITY SOFT FREE
07060h
to Illegal
0706Fh
EXTERNAL INTERRUPT CONTROL REGISTERS
XINT1
— — — — — — —
FLAG
07070h XINT1CR
XINT1 XINT1 XINT1
— — — — —
POLARITY PRIORITY ENA
XINT2
— — — — — — —
FLAG
07071h XINT2CR
XINT2 XINT2 XINT2
— — — — —
POLARITY PRIORITY ENA
07072h
to Illegal
0708Fh
DIGITAL I/O CONTROL REGISTERS
MCRA.15 MCRA.14 MCRA.13 MCRA.12 MCRA.11 MCRA.10 MCRA.9 MCRA.8
07090h MCRA
MCRA.7 MCRA.6 MCRA.5 MCRA.4 MCRA.3 MCRA.2 MCRA.1 MCRA.0
07091h Illegal
MCRB.15 MCRB.14 MCRB.13 MCRB.12 MCRB.11 MCRB.10 MCRB.9 MCRB.8
07092h MCRB
MCRB.7 MCRB.6 MCRB.5 MCRB.4 MCRB.3 MCRB.2 MCRB.1 MCRB.0
07093h Illegal
MCRC.15 MCRC.14 MCRC.13 MCRC.12 MCRC.11 MCRC.10 MCRC.9 MCRC.8
07094h MCRC
MCRC.7 MCRC.6 MCRC.5 MCRC.4 MCRC.3 MCRC.2 MCRC.1 MCRC.0
E7DIR E6DIR E5DIR E4DIR E3DIR E2DIR E1DIR E0DIR
07095h PEDATDIR
IOPE7 IOPE6 IOPE5 IOPE4 IOPE3 IOPE2 IOPE1 IOPE0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 115

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
DIGITAL I/O CONTROL REGISTERS (CONTINUED)
— F6DIR F5DIR F4DIR F3DIR F2DIR F1DIR F0DIR
07096h PFDATDIR
— IOPF6 IOPF5 IOPF4 IOPF3 IOPF2 IOPF1 IOPF0
A7DIR A6DIR A5DIR A4DIR A3DIR A2DIR A1DIR A0DIR
07098h PADATDIR
IOPA7 IOPA6 IOPA5 IOPA4 IOPA3 IOPA2 IOPA1 IOPA0
07099h Illegal
B7DIR B6DIR B5DIR B4DIR B3DIR B2DIR B1DIR B0DIR
0709Ah PBDATDIR
IOPB7 IOPB6 IOPB5 IOPB4 IOPB3 IOPB2 IOPB1 IOPB0
0709Bh Illegal
C7DIR C6DIR C5DIR C4DIR C3DIR C2DIR C1DIR C0DIR
0709Ch PCDATDIR
IOPC7 IOPC6 IOPC5 IOPC4 IOPC3 IOPC2 IOPC1 IOPC0
0709Dh Illegal
— — — — — — — D0DIR
0709Eh PDDATDIR
— — — — — — — IOPD0
0709Fh Illegal
ANALOG-TO-DIGITAL CONVERTER (ADC) REGISTERS
ADC ACQ ACQ ACQ ACQ
— SOFT FREE
S/W RESET PRESCALE3 PRESCALE2 PRESCALE1 PRESCALE0
070A0h ADCTRL1
CONV PRE- CONTIN- INT SEQ1/2
— — — —
SCALE (CPS) UOUS RUN PRIORITY CASCADE
EVB SOC RESET INT ENA INT ENA INT FLAG EVA SOC
SOC SEQ1 SEQ1 BUSY
EN SEQ1 SEQ1 SEQ1 Mode1 SEQ1 Mode0 SEQ1 EN SEQ1
070A1h ADCTRL2
EXT SOC INT ENA INT ENA INT FLAG EVB SOC
Reset SEQ2 SOC SEQ2 SEQ2 BUSY
EN SEQ1 SEQ2 Mode1 SEQ2 Mode0 SEQ2 EN SEQ2
— — — — — — — —
070A2h MAXCONV2 MAXCONV2 MAXCONV2 MAXCONV1 MAXCONV1 MAXCONV1 MAXCONV1 MAXCONV
—
2 1 0 3 2 1 0
CONV 3 CONV 3 CONV 3 CONV 3 CONV 2 CONV 2 CONV 2 CONV 2
070A3h CHSELSEQ1
CONV 1 CONV 1 CONV 1 CONV 1 CONV 0 CONV 0 CONV 0 CONV 0
CONV 7 CONV 7 CONV 7 CONV 7 CONV 6 CONV 6 CONV 6 CONV 6
070A4h CHSELSEQ2
CONV 5 CONV 5 CONV 5 CONV 5 CONV 4 CONV 4 CONV 4 CONV 4
CONV 11 CONV 11 CONV 11 CONV 11 CONV 10 CONV 10 CONV 10 CONV 10
070A5h CHSELSEQ3
CONV 9 CONV 9 CONV 9 CONV 9 CONV 8 CONV 8 CONV 8 CONV 8
CONV 15 CONV 15 CONV 15 CONV 15 CONV 14 CONV 14 CONV 14 CONV 14
070A6h CHSELSEQ4
CONV 13 CONV 13 CONV 13 CONV 13 CONV 12 CONV 12 CONV 12 CONV 12
— — — — SEQ CNTR3 SEQ CNTR2 SEQ CNTR1 SEQ CNTR0
070A7h SEQ2 SEQ2 SEQ2 SEQ2 SEQ1 SEQ1 SEQ1 SEQ1 AUTO_SEQ_SR
STATE 3 STATE 2 STATE 1 STATE 0 STATE 3 STATE 2 STATE 1 STATE 0
D9 D8 D7 D6 D5 D4 D3 D2
070A8h RESULT0
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070A9h RESULT1
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070AAh RESULT2
D1 D0 0 0 0 0 0 0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

116 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
ANALOG-TO-DIGITAL CONVERTER (ADC) REGISTERS (CONTINUED)
D9 D8 D7 D6 D5 D4 D3 D2
070ABh RESULT3
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070ACh RESULT4
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070ADh RESULT5
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070AEh RESULT6
D1 D0 0 0 0 0 00 0
D9 D8 D7 D6 D5 D4 D3 D2
070AFh RESULT7
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B0h RESULT8
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B1h RESULT9
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B2h RESULT10
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B3h RESULT11
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B4h RESULT12
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B5h RESULT13
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B6h RESULT14
D1 D0 0 0 0 0 0 0
D9 D8 D7 D6 D5 D4 D3 D2
070B7h RESULT15
D1 D0 0 0 0 0 0 0
070B8h Reserved
070B9h
to Illegal
070FFh
CONTROLLER AREA NETWORK (CAN) CONFIGURATION CONTROL REGISTERS
— — — — — — — —
07100h MDER
MD3 MD2 ME5 ME4 ME3 ME2 ME1 ME0
TA5 TA4 TA3 TA2 AA5 AA4 AA3 AA2
07101h TCR
TRS5 TRS4 TRS3 TRS2 TRR5 TRR4 TRR3 TRR2
RFP3 RFP2 RFP1 RFP0 RML3 RML2 RML1 RML0
07102h RCR
RMP3 RMP2 RMP1 RMP0 OPC3 OPC2 OPC1 OPC0
— — SUSP CCR PDR DBO WUBA CDR
07103h MCR
ABO STM — — — — MBNR1 MBNR0
— — — — — — — —
07104h BCR2
BRP7 BRP6 BRP5 BRP4 BRP3 BRP2 BRP1 BRP0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 117

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
CONTROLLER AREA NETWORK (CAN) CONFIGURATION CONTROL REGISTERS (CONTINUED)
— — — — — SBG SJW1 SJW0
07105h BCR1
SAM TSEG1−3 TSEG1−2 TSEG1−1 TSEG1−0 TSEG2−2 TSEG2−1 TSEG2−0
— — — — — — — FER
07106h ESR
BEF SA1 CRCE SER ACKE BO EP EW
— — — — — — — —
07107h GSR
— — SMA CCE PDA — RM TM
TEC7 TEC6 TEC5 TEC4 TEC3 TEC2 TEC1 TEC0
07108h CEC
REC7 REC6 REC5 REC4 REC3 REC2 REC1 REC0
— — MIF5 MIF4 MIF3 MIF2 MIF1 MIF0
07109h CAN IFR
CAN_IFR
— RMLIF AAIF WDIF WUIF BOIF EPIF WLIF
MIL — MIM5 MIM4 MIM3 MIM2 MIM1 MIM0
0710Ah CAN IMR
CAN_IMR
EIL RMLIM AAIM WDIM WUIM BOIM EPIM WLIM
LAMI — — LAM0−28 LAM0−27 LAM0−26 LAM0−25 LAM0−24
0710Bh LAM0 H
LAM0_H
LAM0−23 LAM0−22 LAM0−21 LAM0−20 LAM0−19 LAM0−18 LAM0−17 LAM0−16
LAM0−15 LAM0−14 LAM0−13 LAM0−12 LAM0−11 LAM0−10 LAM0−9 LAM0−8
0710Ch LAM0 L
LAM0_L
LAM0−7 LAM0−6 LAM0−5 LAM0−4 LAM0−3 LAM0−2 LAM0−1 LAM0−0
LAMI — — LAM1−28 LAM1−27 LAM1−26 LAM1−25 LAM1−24
0710Dh LAM1 H
LAM1_H
LAM1−23 LAM1−22 LAM1−21 LAM1−20 LAM1−19 LAM1−18 LAM1−17 LAM1−16
LAM1−15 LAM1−14 LAM1−13 LAM1−12 LAM1−11 LAM1−10 LAM1−9 LAM1−8
0710Eh LAM1 L
LAM1_L
LAM1−7 LAM1−6 LAM1−5 LAM1−4 LAM1−3 LAM1−2 LAM1−1 LAM1−0
0710Fh
to Illegal
071FFh
Message Object #0
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07200h MSGID0L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07201h MSGID0H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
07202h MSGCTRL0
— — — RTR DLC3 DLC2 DLC1 DLC0
07203h Reserved
D15 D14 D13 D12 D11 D10 D9 D8
07204h MBX0A
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07205h MBX0B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07206h MBX0C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07207h MBX0D
D7 D6 D5 D4 D3 D2 D1 D0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

118 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
CONTROLLER AREA NETWORK (CAN) CONFIGURATION CONTROL REGISTERS (CONTINUED)
Message Object #1
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07208h MSGID1L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07209h MSGID1H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
0720Ah MSGCTRL1
— — — RTR DLC3 DLC2 DLC1 DLC0
0720Bh Reserved
D15 D14 D13 D12 D11 D10 D9 D8
0720Ch MBX1A
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0720Dh MBX1B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0720Eh MBX1C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0720Fh MBX1D
D7 D6 D5 D4 D3 D2 D1 D0
Message Object #2
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07210h MSGID2L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07211h MSGID2H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
07212h MSGCTRL2
— — — RTR DLC3 DLC2 DLC1 DLC0
07213h Reserved
D15 D14 D13 D12 D11 D10 D9 D8
07214h MBX2A
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07215h MBX2B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07216h MBX2C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07217h MBX2D
D7 D6 D5 D4 D3 D2 D1 D0
Message Object #3
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07218h MSGID3L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07219h MSGID3H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
0721Ah MSGCTRL3
— — — RTR DLC3 DLC2 DLC1 DLC0
0721Bh Reserved
D15 D14 D13 D12 D11 D10 D9 D8
0721Ch MBX3A
D7 D6 D5 D4 D3 D2 D1 D0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 119

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
CONTROLLER AREA NETWORK (CAN) CONFIGURATION CONTROL REGISTERS (CONTINUED)
D15 D14 D13 D12 D11 D10 D9 D8
0721Dh MBX3B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0721Eh MBX3C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0721Fh MBX3D
D7 D6 D5 D4 D3 D2 D1 D0
Message Object #4
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07220h MSGID4L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07221h MSGID4H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
07222h MSGCTRL4
— — — RTR DLC3 DLC2 DLC1 DLC0
07223h Reserved
D15 D14 D13 D12 D11 D10 D9 D8
07224h MBX4A
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07225h MBX4B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07226h MBX4C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07227h MBX4D
D7 D6 D5 D4 D3 D2 D1 D0
Message Object #5
IDL−15 IDL−14 IDL−13 IDL−12 IDL−11 IDL−10 IDL−9 IDL−8
07228h MSGID5L
IDL−7 IDL−6 IDL−5 IDL−4 IDL−3 IDL−2 IDL−1 IDL−0
IDE AME AAM IDH−28 IDH−27 IDH−26 IDH−25 IDH−24
07229h MSGID5H
IDH−23 IDH−22 IDH−21 IDH−20 IDH−19 IDH−18 IDH−17 IDH−16
— — — — — — — —
0722Ah MSGCTRL5
— — — RTR DLC3 DLC2 DLC1 DLC0
0722Bh Reserved
D15 D14 D13 D12 D11 D10 D9 D8
0722Ch MBX5A
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0722Dh MBX5B
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0722Eh MBX5C
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
0722Fh MBX5D
D7 D6 D5 D4 D3 D2 D1 D0
07230h
to Illegal
073FFh

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

120 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
GENERAL-PURPOSE (GP) TIMER CONFIGURATION CONTROL REGISTERS − EVA
— T2STAT T1STAT — T2TOADC T1TOADC(1)
07400h GPTCONA
T1TOADC(0) TCOMPOE — T2PIN T1PIN
D15 D14 D13 D12 D11 D10 D9 D8
07401h T1CNT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07402h T1CMPR
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07403h T1PR
D7 D6 D5 D4 D3 D2 D1 D0
FREE SOFT — TMODE1 TMODE0 TPS2 TPS1 TPS0
07404h T1CON
— TENABLE TCLKS1 TCLKS0 TCLD1 TCLD0 TECMPR —
D15 D14 D13 D12 D11 D10 D9 D8
07405h T2CNT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07406h T2CMPR
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07407h T2PR
D7 D6 D5 D4 D3 D2 D1 D0
FREE SOFT — TMODE1 TMODE0 TPS2 TPS1 TPS0
07408h T2CON
T2SWT1 TENABLE TCLKS1 TCLKS0 TCLD1 TCLD0 TECMPR SELT1PR
07409h
to Illegal
07410h
FULL AND SIMPLE COMPARE UNIT REGISTERS − EVA
PDPINTA
CENABLE CLD1 CLD0 SVENABLE ACTRLD1 ACTRLD0 FCOMPOE
07411h STATUS COMCONA
— — — — — — — —
07412h Illegal
SVRDIR D2 D1 D0 CMP6ACT1 CMP6ACT0 CMP5ACT1 CMP5ACT0
07413h ACTRA
CMP4ACT1 CMP4ACT0 CMP3ACT1 CMP3ACT0 CMP2ACT1 CMP2ACT0 CMP1ACT1 CMP1ACT0
07414h Illegal
— — — — DBT3 DBT2 DBT1 DBT0
07415h DBTCONA
EDBT3 EDBT2 EDBT1 DBTPS2 DBTPS1 DBTPS0 — —
07416h Illegal
D15 D14 D13 D12 D11 D10 D9 D8
07417h CMPR1
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07418h CMPR2
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07419h CMPR3
D7 D6 D5 D4 D3 D2 D1 D0
0741Ah
to Illegal
0741Fh

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 121

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
CAPTURE UNIT REGISTERS − EVA
CAPRES CAPQEPN CAP3EN — CAP3TSEL CAP12TSEL CAP3TOADC
07420h CAPCONA
CAP1EDGE CAP2EDGE CAP3EDGE —
07421h Illegal
— CAP3FIFO CAP2FIFO CAP1FIFO
07422h CAPFIFOA
— — — — — — — —
D15 D14 D13 D12 D11 D10 D9 D8
07423h CAP1FIFO
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07424h CAP2FIFO
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07425h CAP3FIFO
D7 D6 D5 D4 D3 D2 D1 D0
07426h Illegal
D15 D14 D13 D12 D11 D10 D9 D8
07427h CAP1FBOT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07428h CAP2FBOT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07429h CAP3FBOT
D7 D6 D5 D4 D3 D2 D1 D0
0742Ah
to Illegal
0742Bh
EVENT MANAGER (EVA) INTERRUPT CONTROL REGISTERS
T1OFINT T1UFINT T1CINT
— — — — —
ENA ENA ENA
0742Ch EVAIMRA
T1PINT CMP3INT CMP2INT CMP1INT PDPINTA
— — —
ENA ENA ENA ENA ENA
— — — — — — — —
0742Dh T2OFINT T2UFINT T2CINT T2PINT EVAIMRB
— — — —
ENA ENA ENA ENA
— — — — — — — —
0742Eh CAP3INT CAP2INT CAP1INT EVAIMRC
— — — — —
ENA ENA ENA
T1OFINT T1UFINT T1CINT
— — — — —
FLAG FLAG FLAG
0742Fh EVAIFRA
T1PINT CMP3INT CMP2INT CMP1INT PDPINTA
— — —
FLAG FLAG FLAG FLAG FLAG
— — — — — — — —
07430h T2OFINT T2UFINT T2CINT T2PINT EVAIFRB
— — — —
FLAG FLAG FLAG FLAG
— — — — — — — —
07431h CAP3INT CAP2INT CAP1INT EVAIFRC
— — — — —
FLAG FLAG FLAG
07432h
to Illegal
074FFh

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

122 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
GENERAL-PURPOSE (GP) TIMER CONFIGURATION CONTROL REGISTERS − EVB
— T4STAT T3STAT — T4TOADC T3TOADC(1)
07500h GPTCONB
T3TOADC(0) TCOMPOEB — T4PIN T3PIN
D15 D14 D13 D12 D11 D10 D9 D8
07501h T3CNT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07502h T3CMPR
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07503h T3PR
D7 D6 D5 D4 D3 D2 D1 D0
FREE SOFT — TMODE1 TMODE0 TPS2 TPS1 TPS0
07504h T3CON
— TENABLE TCLKS1 TCLKS0 TCLD1 TCLD0 TECMPR —
D15 D14 D13 D12 D11 D10 D9 D8
07505h T4CNT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07506h T4CMPR
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07507h T4PR
D7 D6 D5 D4 D3 D2 D1 D0
FREE SOFT — TMODE1 TMODE0 TPS2 TPS1 TPS0
07508h T4CON
T4SWT3 TENABLE TCLKS1 TCLKS0 TCLD1 TCLD0 TECMPR SELT3PR
07509h
to Reserved
07510h
FULL AND SIMPLE COMPARE UNIT REGISTERS− EVB
PDPINTB
CENABLE CLD1 CLD0 SVENABLE ACTRLD1 ACTRLD0 FCOMPOEB
07511h STATUS COMCONB
— — — — — — — —
07512h Reserved
SVRDIR D2 D1 D0 CMP12ACT1 CMP12ACT0 CMP11ACT1 CMP11ACT0
07513h ACTRB
CMP10ACT1 CMP10ACT0 CMP9ACT1 CMP9ACT0 CMP8ACT1 CMP8ACT0 CMP7ACT1 CMP7ACT0
07514h Reserved
— — — — DBT3 DBT2 DBT1 DBT0
07515h DBTCONB
EDBT3 EDBT2 EDBT1 DBTPS2 DBTPS1 DBTPS0 — —
07516h Reserved
D15 D14 D13 D12 D11 D10 D9 D8
07517h CMPR4
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07518h CMPR5
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07519h CMPR6
D7 D6 D5 D4 D3 D2 D1 D0
0751Ah
to Reserved
0751Fh

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 123

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
CAPTURE UNIT REGISTERS− EVB
CAPRES CAPQEPN CAP6EN — CAP6TSEL CAP45SEL CAP6TOADC
07520h CAPCONB
CAP4EDGE CAP5EDGE CAP6EDGE —
07521h Reserved
— CAP6FIFO CAP5FIFO CAP4FIFO
07522h CAPFIFOB
— — — — — — — —
D15 D14 D13 D12 D11 D10 D9 D8
07523h CAP4FIFO
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07524h CAP5FIFO
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07525h CAP6FIFO
D7 D6 D5 D4 D3 D2 D1 D0
07526h Reserved
D15 D14 D13 D12 D11 D10 D9 D8
07527h CAP4FBOT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07528h CAP5FBOT
D7 D6 D5 D4 D3 D2 D1 D0
D15 D14 D13 D12 D11 D10 D9 D8
07529h CAP6FBOT
D7 D6 D5 D4 D3 D2 D1 D0
0752Ah
to Reserved
0752Bh
EVENT MANAGER (EVB) INTERRUPT CONTROL REGISTERS
T3OFINT T3UFINT T3CINT
— — — — —
ENA ENA ENA
0752Ch EVBIMRA
T3PINT CMP6INT CMP5INT CMP4INT PDPINTB
— — —
ENA ENA ENA ENA ENA
— — — — — — — —
0752Dh T4OFINT T4UFINT T4CINT T4PINT EVBIMRB
— — — —
ENA ENA ENA ENA
— — — — — — — —
0752Eh CAP6INT CAP5INT CAP4INT EVBIMRC
— — — — —
ENA ENA ENA
T3OFINT T3UFINT T3CINT
— — — — —
FLAG FLAG FLAG
0752Fh EVBIFRA
T3PINT CMP6INT CMP5INT CMP4INT PDPINTB
— — —
FLAG FLAG FLAG FLAG FLAG
— — — — — — — —
07530h T4OFINT T4UFINT T4CINT T4PINT EVBIFRB
— — — —
FLAG FLAG FLAG FLAG
— — — — — — — —
07531h CAP6INT CAP5INT CAP4INT EVBIFRC
— — — — —
FLAG FLAG FLAG
07532h
to Reserved
0753Fh

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.

124 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

peripheral register descriptions (continued)

Table 19. LF240xA/LC240xA DSP Peripheral Register Description (Continued)

BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8

ADDR REG
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
KEY REGISTERS
077F0h High Word of the 64
64-Bit
Bit KEY Register KEY3
077F1h Third Word of the 64
64-Bit
Bit KEY Register KEY2
077F2h Second Word of the 64
64-Bit
Bit KEY Register KEY1
077F3h Low Word of the 64-Bit
64 Bit KEY Register KEY0
PROGRAM MEMORY SPACE − FLASH REGISTERS
— — — — — — — —
0xx00h PMPC
— — — — PWR DWN KEY1 KEY0 EXEC
PRECND
— — — — — — WSVER EN
Mode1
0xx01h CTRL†
PRECND ENG/R ENG/R ENG/R
FCM3 FCM2 FCM1 FCM0
Mode0 Mode2 Mode1 Mode0

0xx02h WADDR

0xx03h WDATA

— — — — — — — —
0xx04h TCR
— — — — — — — —
— — — — — — — —
0xx05h ENAB
— — — — — — — —
— — — — — — — —
0xx06h SECT 4 SECT 3 SECT 2 SECT 1 SECT
— — — —
ENABLE ENABLE ENABLE ENABLE
I/O MEMORY SPACE
— — — — — — — —
0FF0Fh FCMR
— — — — — — — —
WAIT-STATE GENERATOR CONTROL REGISTER
— — — — — BVIS.1 BVIS.0 ISWS.2
0FFFFh WSGR
ISWS.1 ISWS.0 DSWS.2 DSWS.1 DSWS.0 PSWS.2 PSWS.1 PSWS.0

Indicates change with respect to the F243/F241,

F243/F241 C242 device register maps
maps.
† Register shown with bits set in register mode.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 125

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

MECHANICAL DATA

Table 20 through Table 23 provide the typical thermal resistance characteristics for each mechanical
package.
Table 20. Typical Thermal Resistance Characteristics
for the PAG Package
PARAMETER DESCRIPTION °C / W
ΘJA Junction-to-ambient 42
ΘJC Junction-to-case 7
Ψjt Junction-to-top of package 0.5

Table 21. Typical Thermal Resistance Characteristics

for the PG Package
PARAMETER DESCRIPTION °C / W
ΘJA Junction-to-ambient 35
ΘJC Junction-to-case 11
Ψjt Junction-to-top of package 1.0

Table 22. Typical Thermal Resistance Characteristics

for the PGE Package
PARAMETER DESCRIPTION °C / W
ΘJA Junction-to-ambient 32
ΘJC Junction-to-case 8
Ψjt Junction-to-top of package 0.5

Table 23. Typical Thermal Resistance Characteristics

for the PZ Package
PARAMETER DESCRIPTION °C / W
ΘJA Junction-to-ambient 42
ΘJC Junction-to-case 8
Ψjt Junction-to-top of package 0.5

126 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

 TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

MECHANICAL DATA (CONTINUED)

The following mechanical package diagram(s) reflect the most current released mechanical data available
for the designated device(s).

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 127

 PACKAGE OPTION ADDENDUM

www.ti.com 10-Dec-2020

PACKAGING INFORMATION

Orderable Device Status Package Type Package Pins Package Eco Plan Lead finish/ MSL Peak Temp Op Temp (°C) Device Marking Samples
(1) Drawing Qty (2) Ball material (3) (4/5)
(6)

TMS320LF2402APGA ACTIVE QFP PG 64 66 RoHS & Green NIPDAU Level-4-260C-72 HR -40 to 85 320LF2402APGA
TMS
TMS320LF2402APGAR ACTIVE QFP PG 64 400 RoHS & Green NIPDAU Level-4-260C-72 HR -40 to 85 320LF2402APGA
TMS
TMS320LF2402APGS NRND QFP PG 64 66 RoHS & Green NIPDAU Level-4-260C-72 HR -40 to 125 320LF2402APGS
TMS
TMS320LF2403APAG4 ACTIVE TQFP PAG 64 160 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 85 LF2403APAGA
TMS320
TMS320LF2403APAGA ACTIVE TQFP PAG 64 160 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 85 LF2403APAGA
TMS320
TMS320LF2403APAGS ACTIVE TQFP PAG 64 160 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 125 LF2403APAGS
TMS320
TMS320LF2406APZA ACTIVE LQFP PZ 100 90 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 320LF2406APZA
TMS
TMS320LF2406APZAG4 ACTIVE LQFP PZ 100 90 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 320LF2406APZA
TMS
TMS320LF2406APZAR ACTIVE LQFP PZ 100 1000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 320LF2406APZA
TMS
TMS320LF2406APZS ACTIVE LQFP PZ 100 90 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 320LF2406APZS
TMS
TMS320LF2407APGEA ACTIVE LQFP PGE 144 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 320LF2407APGEA
TMS
TMS320LF2407APGEG4 ACTIVE LQFP PGE 144 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 320LF2407APGEA
TMS
TMS320LF2407APGES ACTIVE LQFP PGE 144 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 320LF2407APGES
TMS

(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

Addendum-Page 1
 PACKAGE OPTION ADDENDUM

www.ti.com 10-Dec-2020

(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.

(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.

(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 2
 MECHANICAL DATA

MQFP008 – JULY 1998

PG (R-PQFP-G64) PLASTIC QUAD FLATPACK

0,45
1,00 0,20 M
0,25
51 33

52 32

14,20 18,00
12,00 TYP
13,80 17,20

64 20

1 19
0,15 NOM
18,00 TYP
20,20
19,80
24,00
23,20
Gage Plane

0,25
0,10 MIN
2,70 TYP 0°– 10°
1,10
0,70
Seating Plane

3,10 MAX 0,10

4040101 / B 03/95

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Contact field sales office to determine if a tighter coplanarity requirement is available for this package.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

 MECHANICAL DATA

MTQF013A – OCTOBER 1994 – REVISED DECEMBER 1996

PZ (S-PQFP-G100) PLASTIC QUAD FLATPACK

0,27
0,50 0,08 M
0,17
75 51

76 50

100 26 0,13 NOM

1 25
12,00 TYP Gage Plane
14,20
SQ
13,80
16,20 0,25
SQ 0,05 MIN 0°– 7°
15,80

1,45 0,75
1,35 0,45

Seating Plane

1,60 MAX 0,08

4040149 /B 11/96

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-026

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

 MECHANICAL DATA

MTQF006A – JANUARY 1995 – REVISED DECEMBER 1996

PAG (S-PQFP-G64) PLASTIC QUAD FLATPACK

0,27
0,50 0,08 M
0,17
48 33

49 32

64 17

0,13 NOM

1 16
7,50 TYP
Gage Plane
10,20
SQ
9,80
12,20 0,25
SQ 0,05 MIN
11,80 0°– 7°
1,05
0,95 0,75
0,45
Seating Plane

1,20 MAX 0,08

4040282 / C 11/96

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-026

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 MECHANICAL DATA

MTQF017A – OCTOBER 1994 – REVISED DECEMBER 1996

PGE (S-PQFP-G144) PLASTIC QUAD FLATPACK

108 73

109 72

0,27
0,08 M
0,17

0,50

144 0,13 NOM

37

1 36
Gage Plane
17,50 TYP
20,20 SQ
19,80 0,25
22,20 0,05 MIN 0°– 7°
SQ
21,80

0,75
0,45
1,45
1,35

Seating Plane

1,60 MAX 0,08

4040147 / C 10/96

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-026

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

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