24AA128/24LC128/24FC128

128K I2C™ CMOS Serial EEPROM

Device Selection Table • Temperature ranges:
- Industrial (I): -40°C to +85°C
Part VCC Max. Clock Temp.
- Automotive (E): -40°C to +125°C
Number Range Frequency Ranges

24AA128 1.7-5.5V 400 kHz(1) I Description:

24LC128 2.5-5.5V 400 kHz I, E
The Microchip Technology Inc. 24AA128/24LC128/
24FC128 1.7-5.5V 1 MHz(2) I 24FC128 (24XX128*) is a 16K x 8 (128 Kbit) Serial
Note 1: 100 kHz for VCC < 2.5V. Electrically Erasable PROM (EEPROM), capable of
2: 400 kHz for VCC < 2.5V. operation across a broad voltage range (1.7V to 5.5V).
It has been developed for advanced, low-power
Features: applications such as personal communications or data
acquisition. This device also has a page write capabil-
• Single supply with operation down to 1.7V for
ity of up to 64 bytes of data. This device is capable of
24AA128/24FC128 devices, 2.5V for 24LC128 both random and sequential reads up to the 128K
devices
boundary. Functional address lines allow up to eight
• Low-Power CMOS Technology: devices on the same bus, for up to 1 Mbit address
- Write current 3 mA, typical space. This device is available in the standard 8-pin
- Standby current 100 nA, typical plastic DIP, SOIC (3.90 mm and 5.28 mm), TSSOP,
• 2-Wire Serial Interface, I2C™ Compatible MSOP, DFN, and Chip Scale packages.
• Cascadable up to Eight Devices Block Diagram
• Schmitt Trigger Inputs for Noise Suppression
A0 A1 A2 WP HV Generator
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• 1 MHz Clock for FC Versions I/O Memory
EEPROM
• Page Write Time 5 ms, typical Control Control XDEC Array
Logic Logic
• Self-Timed Erase/Write Cycle Page Latches
• 64-Byte Page Write Buffer <adjust per device>
• Hardware Write-Protect I/O
SCL
• ESD Protection >4000V YDEC

• More than 1 Million Erase/Write Cycles SDA

• Data Retention > 200 years
• Factory Programming Available VCC
VSS Sense Amp.
• Packages include 8-lead PDIP, SOIC, TSSOP,
R/W Control
DFN, MSOP, and Chip Scale Packages
• Pb-free and RoHS Compliant
*24XX128 is used in this document as a generic part number
for the 24AA128/24LC128/24FC128 devices.

Package Types
PDIP/SOIC TSSOP/MSOP1 DFN CS (Chip Scale)2

A0 1 8 VCC VCC A1 A0
A0 1 8 VCC A0 1 8 VCC
1 2 3
24XX128
24XX128

24XX128

A1 2 7 WP A1 2 7 WP A1 2 7 WP
WP 4 5 A2
A2 3 6 SCL 3 6 A2 3 6 SCL 6 7 8
A2 SCL
VSS 4 5 SDA SDA SCL VSS
VSS 4 5 SDA VSS 4 5 SDA
(TOP DOWN VIEW,
BALLS NOT VISIBLE)
Note 1: Pins A0 and A1 are no-connects for the MSOP package only.
2: Available in I-temp, “AA” only.

© 2008 Microchip Technology Inc. DS21191Q-page 1

24AA128/24LC128/24FC128
1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings(†)

VCC .............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied ................................................................................................-40°C to +125°C
ESD protection on all pins ......................................................................................................................................................≥ 4 kV

† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.

TABLE 1-1: DC CHARACTERISTICS

Electrical Characteristics:
DC CHARACTERISTICS Industrial (I): VCC = +1.7V to 5.5V TA = -40°C to +85°C
Automotive (E): VCC = +2.5V to 5.5V TA = -40°C to 125°C
Param.
Sym. Characteristic Min. Max. Units Conditions
No.
D1 — A0, A1, A2, SCL, SDA and — — — —
WP pins:
D2 VIH High-level input voltage 0.7 VCC — V —
D3 VIL Low-level input voltage — 0.3 VCC V VCC ≥ 2.5V
0.2 VCC V VCC < 2.5V
D4 VHYS Hysteresis of Schmitt Trigger 0.05 VCC — V VCC ≥ 2.5V (Note 1)
inputs (SDA, SCL pins)
D5 VOL Low-level output voltage — 0.40 V IOL = 3.0 mA @ VCC = 4.5V
IOL = 2.1 mA @ VCC = 2.5V
D6 ILI Input leakage current — ±1 μA VIN = VSS or VCC, WP = VSS
VIN = VSS or VCC, WP = VCC
D7 ILO Output leakage current — ±1 μA VOUT = VSS or VCC
D8 CIN, Pin capacitance — 10 pF VCC = 5.0V (Note 1)
COUT (all inputs/outputs) TA = 25°C, FCLK = 1 MHz
D9 ICC Read Operating current — 400 μA VCC = 5.5V, SCL = 400 kHz
ICC Write — 3 mA VCC = 5.5V
D10 ICCS Standby current — 1 μA TA = -40°C to +85°C
SCL = SDA = VCC = 5.5V
A0, A1, A2, WP = VSS
— 5 μA TA = -40°C to 125°C
SCL = SDA = VCC = 5.5V
A0, A1, A2, WP = VSS
Note 1: This parameter is periodically sampled and not 100% tested.

DS21191Q-page 2 © 2008 Microchip Technology Inc.

 24AA128/24LC128/24FC128
TABLE 1-2: AC CHARACTERISTICS
Electrical Characteristics:
AC CHARACTERISTICS Industrial (I): VCC = +1.7V to 5.5V TA = -40°C to +85°C
Automotive (E): VCC = +2.5V to 5.5V TA = -40°C to 125°C
Param.
Sym. Characteristic Min. Max. Units Conditions
No.
1 FCLK Clock frequency — 100 kHz 1.7V ≤ VCC < 2.5V
— 400 2.5V ≤ VCC ≤ 5.5V
— 400 1.7V ≤ VCC < 2.5V 24FC128
— 1000 2.5V ≤ VCC ≤ 5.5V 24FC128
2 THIGH Clock high time 4000 — ns 1.7V ≤ VCC < 2.5V
600 — 2.5V ≤ VCC ≤ 5.5V
600 — 1.7V ≤ VCC < 2.5V 24FC128
500 — 2.5V ≤ VCC ≤ 5.5V 24FC128
3 TLOW Clock low time 4700 — ns 1.7V ≤ VCC < 2.5V
1300 — 2.5V ≤ VCC ≤ 5.5V
1300 — 1.7V ≤ VCC < 2.5V 24FC128
500 — 2.5V ≤ VCC ≤ 5.5V 24FC128
4 TR SDA and SCL rise time — 1000 ns 1.7V ≤ VCC < 2.5V
(Note 1) — 300 2.5V ≤ VCC ≤ 5.5V
— 300 1.7V ≤ VCC ≤ 5.5V 24FC128
5 TF SDA and SCL fall time — 300 ns All except, 24FC128
(Note 1) — 100 1.7V ≤ VCC ≤ 5.5V 24FC128
6 THD:STA Start condition hold time 4000 — ns 1.7V ≤ VCC < 2.5V
600 — 2.5V ≤ VCC ≤ 5.5V
600 — 1.7V ≤ VCC < 2.5V 24FC128
250 — 2.5V ≤ VCC ≤ 5.5V 24FC128
7 TSU:STA Start condition setup time 4700 — ns 1.7V ≤ VCC < 2.5V
600 — 2.5V ≤ VCC ≤ 5.5V
600 — 1.7V ≤ VCC < 2.5V 24FC128
250 — 2.5V ≤ VCC ≤ 5.5V 24FC128
8 THD:DAT Data input hold time 0 — ns (Note 2)
9 TSU:DAT Data input setup time 250 — ns 1.7V ≤ VCC < 2.5V
100 — 2.5V ≤ VCC ≤ 5.5V
100 — 1.7V ≤ VCC ≤ 5.5V 24FC128
10 TSU:STO Stop condition setup time 4000 — ns 1.7 V ≤ VCC < 2.5V
600 — 2.5 V ≤ VCC ≤ 5.5V
600 — 1.7V ≤ VCC < 2.5V 24FC128
250 — 2.5 V ≤ VCC ≤ 5.5V 24FC128
11 TSU:WP WP setup time 4000 — ns 1.7V ≤ VCC < 2.5V
600 — 2.5V ≤ VCC ≤ 5.5V
600 — 1.7V ≤ VCC ≤ 5.5V 24FC128
12 THD:WP WP hold time 4700 — ns 1.7V ≤ VCC < 2.5V
1300 — 2.5V ≤ VCC ≤ 5.5V
1300 — 1.7V ≤ VCC ≤ 5.5V 24FC128
Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
3: The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved
noise spike suppression. This eliminates the need for a TI specification for standard operation.
4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model, which can be obtained from Microchip’s web site

© 2008 Microchip Technology Inc. DS21191Q-page 3

24AA128/24LC128/24FC128
TABLE 1-2: AC CHARACTERISTICS (CONTINUED)
Electrical Characteristics:
AC CHARACTERISTICS Industrial (I): VCC = +1.7V to 5.5V TA = -40°C to +85°C
Automotive (E): VCC = +2.5V to 5.5V TA = -40°C to 125°C
Param.
Sym. Characteristic Min. Max. Units Conditions
No.
13 TAA Output valid from clock — 3500 ns 1.7V ≤ VCC < 2.5V
(Note 2) — 900 2.5V ≤ VCC ≤ 5.5V
— 900 1.7V ≤ VCC < 2.5V 24FC128
— 400 2.5V ≤ VCC ≤ 5.5V 24FC128
14 TBUF Bus free time: Time the bus 4700 — ns 1.7V ≤ VCC < 2.5V
must be free before a new 1300 — 2.5V ≤ VCC ≤ 5.5V
transmission can start 1300 — 1.7V ≤ VCC < 2.5V 24FC128
500 — 2.5V ≤ VCC ≤ 5.5V 24FC128
15 TOF Output fall time from VIH 10 + 0.1CB 250 ns All except, 24FC128 (Note 1)
minimum to VIL maximum 250 24FC128 (Note 1)
CB ≤ 100 pF
16 TSP Input filter spike suppression — 50 ns All except, 24FC128 (Notes 1
(SDA and SCL pins) and 3)
17 TWC Write cycle time (byte or — 5 ms —
page)
18 — Endurance 1,000,000 — cycles 25°C (Note 4)
Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
3: The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved
noise spike suppression. This eliminates the need for a TI specification for standard operation.
4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model, which can be obtained from Microchip’s web site
at www.microchip.com.

FIGURE 1-1: BUS TIMING DATA

5 4
2 D4

SCL
7
3 8 9 10
SDA
6
IN
16

13 14
SDA
OUT

(protected)
WP 11 12
(unprotected)

DS21191Q-page 4 © 2008 Microchip Technology Inc.

24AA128/24LC128/24FC128

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DS21191Q-page 14 © 2008 Microchip Technology Inc.

 24AA128/24LC128/24FC128
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.

PART NO. X /XX Examples:

Device
a) 24AA128-I/P: Industrial Temp.,
Temperature Package
Range 1.7V, PDIP package.
b) 24AA128T-I/SN: Tape and Reel,
Industrial Temp., 1.7V, SOIC
Device: 24AA128: 128 Kbit 1.7V I2C Serial EEPROM
package.
24AA128T: 128 Kbit 1.7V I2C Serial EEPROM
(Tape and Reel) c) 24AA128-I/ST: Industrial Temp.,
24LC128: 128 Kbit 2.5V I2C Serial EEPROM 1.7V, TSSOP package.
24LC128T: 128 Kbit 2.5V I2C Serial EEPROM d) 24AA128-I/MS: Industrial Temp.,
(Tape and Reel) 1.7V, MSOP package.
24FC128: 128 Kbit High Speed I2C Serial e) 24LC128-E/P: Extended Temp.,
EEPROM 2.5V, PDIP package.
24FC128T: 128 Kbit High Speed I2C Serial
f) 24LC128-I/SN: Industrial Temp.,
EEPROM (Tape and Reel)
2.5V, SOIC package.
g) 24LC128T-I/SN: Tape and Reel,
Temperature I = -40°C to +85°C Industrial Temp., 2.5V, SOIC
Range: E = -40°C to +125°C package.
h) 24LC128-I/MS: Industrial Temp.,
Package: P = Plastic DIP (300 mil body), 8-lead 2.5V, MSOP package.
SN = Plastic SOIC (3.90 mm body), i) 24FC128-I/P: Industrial Temp.,
8-lead 1.7V, High Speed, PDIP package.
SM = Plastic SOIC (5.28 mm body),
j) 24FC128-I/SN: Industrial Temp.,
8-lead
1.7V, High Speed, SOIC package.
ST = Plastic TSSOP (4.4 mm), 8-lead
MF = Dual, Flat, No Lead (DFN) k) 24FC128T-I/SN: Tape and Reel,
(6x5 mm body), 8-lead Industrial Temp., 1.7V, High Speed,
MS = Plastic Micro Small Outline SOIC package
(MSOP), 8-lead l) 24AA128T-I/CS15K:Industrial
CS15K(1) = Chip Scale (CS), 8-lead (I-temp, Temp., 1.7V, CS package, Tape and
“AA”, Tape and Reel only) Reel

Note 1: “15K” indicates 150K technology

© 2007 Microchip Technology Inc. DS21191P-page27