AS32-TTL-1W Data Sheet

433mhz, 1W, LoRa Spread Spectrum Wireless Serial Port Module

Data Encryption, Point-to-Point Transmission

Table of Content
1. Product Overview ........................................................................................................................................... 3
2. Product Features ............................................................................................................................................ 3
3. Series Products .............................................................................................................................................. 4
4. Electrical Parameters ...................................................................................................................................... 4
5. Module Functions............................................................................................................................................ 5
5.1 Recommended Connection Diagram ........................................................................................................ 5
5.2 Pin Definition ............................................................................................................................................. 5
5.3 Pin Function .............................................................................................................................................. 6
6. Module Command .......................................................................................................................................... 9
6.1 Command Format ..................................................................................................................................... 9
6.2 Module Parameter Register .................................................................................................................... 10
6.3 Module Factory Setting ........................................................................................................................... 12
7. Module Functions ......................................................................................................................................... 12
7.1 Overview of Module Functions ................................................................................................................ 12
7.2 Detailed Module Functions ...................................................................................................................... 13
8. Sequence Diagram ....................................................................................................................................... 16
8.1 Sequence Diagram of Data Transmission ............................................................................................... 16
8.2 Sequence Diagram of Module Switch ..................................................................................................... 16
8.3 Sequence Diagram of Module Command................................................................................................ 17
9. Package Information ..................................................................................................................................... 20
9.1 Machine Size (unit: mm).......................................................................................................................... 20
9.2 Reference Pad Design (unit: mm) ............................................................................................................ 20
10. Package Manner......................................................................................................................................... 21
10.1 Electrostatic Bag Package .................................................................................................................... 21
10.2 Pallet Package (unit: mm) ..................................................................................................................... 21

2
1. Product Overview
AS32-TTL-1W is a 1W industrial wireless data transceiver with high stability, operates at 433MHz. The module
adopts SX1278 incorporating the LORA spread spectrum modem and efficient loop error correction algorithm,
which greatly improves the anti-interference ability and stability. It has four operation modes and can be switched
freely in the runtime. In power saving mode, the current consumption is extremely low, ideal for applications of
ultra-low current consumption.

2. Product Features
 Point-to-point transmission, transparent  CHAN:0* 00~0*1FH (corresponding to
transmission, wake on radio 410~441MHz)
 Efficient cycle interleaving error correction  Default operation frequency 433MHz,
code, maximum error correction 64bit application free band
 Receiving sensitivity is up to -130dBm, range  Supply voltage range
3000 meters  2.5V-5.5VDC
 Sleep current is only 1.5uA  Built-in LDO ensures stable power supply,
 Ultra-low receiving current consumption meeting variety system requirements
 Automatically relay, continuous transmission  Data 256 circular FIFO
 Data encryption  Transmit FIFO of 256 bytes
 RSSI and voltage are readable  Receive FIFO of 256 bytes
 Built-in multiple exception handling  Automatic subcontracting transmission
mechanisms ensure the stable operation for a  The module can send infinite data packet
long time length with some particular combinations
 Max Transmission Power is about 30dBm of air rate and baud rate
(about 1W)  Broadcasting data and monitor [5]
 Multiple baud rates [1]  Module address set as 0*FFFF, monitor
 8 commonly used baud rates, default data transmission of all modules in the
baud rate 9600bps same channel(monitor). The data sent can
 Baud rate range:1200bps~115200bps be received by all modules of random
 Multiple air speeds [2] address and the same channel
 6 air speeds adjustable, default air speed  Point-to-Point transmission [5]
2.4 Kbps  The data sent by random module can be
 0.3~19.2kbps（0.3kbps、1.2kbps、 received by appointed module. Multiple
2.4kbps、4.8kbps、9.6kbps、19.2kbps） receivers of the same address and
 4 operation modes [2] channel all can receive the data
 MD0 = 0 MD1 = 0 general operation  Data can achieve point-to-point
mode transmission across channels
 MD0 = 0 MD1 =1 Power saving operation  Can realize networking, relay and other
mode applications.
 MD0 = 1 MD1 = 0 wake up operation  Wake on Radio [5]
mode  The transmitter in the wake-up mode will
 MD0 = 1 MD1 = 1 sleep mode automatically increase the wake-up code
 Frequency 410~441MHz, providing 32 when sending data, and wake up the
channels [4] target module in the power-saving mode.
 410M + CHAN * 1MHz  Transmit mode is the same as
point-to-point transmission

3
Remarks:

1) For details, see the SPEED register in Chapter 6.2 of module Parameter Configuration.
2) For details, See the pin definition and function in chapter 5
3) For details, see the CHAN register in Chapter 6.2 of module parameter configuration.
4) For details, See the relationship diagram of voltage and power in Chapter 5
5) For details, See the module function table in Chapter 7.

3. Series Products
Table 3-1 Brief Specification of AS32-TTL-1W

Carrier frequency Size Max transmit power Range

Item model IC Package Antenna
(Hz) （mm） （dBm） （km）

AS32-TTL-100 410~441M SX1278 20*36 21 3.0 In-line package SMA-K

AS32-TTL-1W 410~441M SX1278 23*43 30 8.0 In-line package SMA-K

*All models of the AS32 series can communicate with each other*

4. Electrical Parameters
Table 4-1 Electrical Parameters of AS32-TTL-1W

Test Condition: Tc=25℃， VCC=3.3V

Typical
Item model Parameter name Description Min Max Units
value
If the power supply voltage is less than 3.6v, the
AS32-TTL-1W Supply voltage output power will decline, but it has little influence 2.5 5.5 V
on the received power
Transmitting current
AS32-TTL-1W Max Transmission Power is about 30dBm (about
520 mA
1W)

General working mode（MD0=0，MD1=0） 17 mA

Power saving mode（MD0=0，MD1=1） 30 mA

AS32-TTL-1W Receiving current
Wake-up mode（MD0=1，MD1=0） 17 mA

Sleep mode（MD1=1，MD1=1）

current measured in sleep mode （ MD0=1 ，

AS32-TTL-1W Sleep current 1.5 uA
MD1=1）

AS32-TTL-1W 410-441MHz,1MHz stepping, 32Channels,

Working frequency 410 433 441 MHz
factory default 433MHz
AS32-TTL-1W Transmit power 30 dBm

6 levels adjustable（0.3kbps、1.2kbps、2.4kbps、
AS32-TTL-1W Airspeed 0.3k 2.4k 19.2k bps
4.8kbps、9.6kbps、19.2kbps）

AS32-TTL-1W The receiving sensitivity has nothing to do with

Receiving sensitivity -130 dBm
the serial port rate or delay time
AS32-TTL-1W Operation temperature AS32-TTL-1W industrial product -40 +85 ℃

AS32-TTL-1W Operation humidity Relative humidity, no condensation 10% 90%

AS32-TTL-1W Storage temperature -40 +125 ℃

4
5. Module Functions
5.1 Recommended Connection Diagram

0-1 Recommended Connection Diagram

5.2 Pin Definition

Table 5-1 Pin Definition of AS32-TTL-1W

Pin Number Pin Name Pin Orientation Pin Usage

1 MD0 Input (weak pull up) Cooperates with MD1 of low delay to decide four kinds of operation modes

2 MD1 Input (weak pull up) Cooperates with MD0 of low delay to decide four kinds of operation modes
TTL UART inputs, connects to external TXD output pin. It can be configured as
3 RXD Input
open-drain or pull-up input, see parameter setting for details
TTL UART outputs, connects to external RXD input pin. It can be configured as
4 TXD output
open-drain or push-pull output, see parameter setting for details
Indicates the operation status of the module, and wakes up the external MCU.
During the procedure of self-test initialization, the pin outputs low level. Can be
5 AUX output
configured as open-drain output, or push-pull output. see parameter settings for
details
power supply, voltage2.5-5.5V (Note: if it is less than 3.6V, the output power will
6 VCC
decline, but the impact on the receiving performance is very small.)
7 GND Ground line, connected to the power supply reference ground

5
5.3 Pin Function
5.3.1 Pins Function of MDO and MD1 in Low Latency Mode

Picture 0-2 Internal structure of the MD0 and MD1 pin

The free combinations of the high and low level of pins MD0 and MD1 in low-latency operation mode can
determine the four operating modes of the wireless UART module and these four operating modes can be freely
switched.
Pay attention to the following two special cases when switching working modes:
1. The module received wireless data and has not finished outputting, and then enters a new mode after the
data output is completed.
2. The module sends wireless data has not been sent yet, and then enters the new mode after the data is sent.
Table 5-2 Operation Mode Form

Operation Mode MD1 MD0 Mode Introduction

General Mode 0 0 UART open, wireless channel open

UART receiving is off, the wireless is in the wake-up mode, after receiving wireless data,
Power-Saving Mode 0 1
open the UART to send data.
UART open, wireless channel open, and the only difference between general mode is:
Wake-Up Mode 1 0 Before the packet is transmitted, the wake code is automatically increased so that it can
wake up the receiver in power saving mode
Sleep Mode 1 1 Module entering into sleep can receive the parameter configuration Command

Table 5-3 Communication Mode Form

Operation Mode Data Transmission Mode

Receive Wake-Up Power Saving
Transmit General Operation Operation Transparent Broadcasting Point-To-Point
Mode Mode Mode Broadcasting and Monitor Transmission
General
operation Y Y - Y Y Y
Operation mode
Mode Wake-up
operation Y Y Y Y Y Y
mode

6
5.3.2 Function of AUX Pin

Picture 0-3 Schematic Diagram of The Internal Structure of The AUX Pin
AUX is used as indication for wireless send and receive buffer and self-test. It indicates whether the module has
data not sent by wireless, or whether the received data has been sent through the UART, or the module is
initializing the self-test.
Mode of AUX pin should be checked before switching operation mode. When the AUX output is low, it indicates
that the module is busy. After the AUX output is high for 2ms, it indicates the module is idle and ready to change
operation mode. MDO, MD1 in low latency mode start to jump and after that AUX keeps outputting high level for
3ms, the module changes the mode. When AUX outputs high level and maintains for about 2ms, the mode
change is done.
In the process of reset, the module will reinitialize the parameters, during which the AUX keep low level.
5.3.3 Function of RXD And TXD Pins

Picture 0-4 Internal Structure of the RXD and TXD Pin

RXD and TXD are serial data transmission and reception pins, at the same time, the UART has 8 common baud
rates to choose from, the supported baud rate range is 1200~115200 (bps); the UART parity mode also has odd
parity, even parity and No parity. The byte transmission format of UART is shown in Picture:
IDLE
Sp1
0 1 2 3 4 5 6 7 p
St

Picture 0-5 Format of UART Byte Transmission

IDLE: High level when idle
St: start bit
P: parity bit
7
Sp1: stop bit

5.3.4 Function of VCC and GND Pins

GND indicates the ground line, VCC indicates the power supply, and the module power supply has its own LDO.
Input voltage range: 2.5V - 5.5VDC. As shown in below Picture

Picture 0-6 Power LDO

Remarks:

The input power ripple coefficient should be controlled within 100mV, and the instantaneous pulse current should be more than 200mA.

When the power supply voltage is less than critical value, the output power declines, but the reception
performance is less affected. The relationship between voltage and power is shown in below Picture

Picture 0-7 Relationship diagram of voltage and power

8
6. Module Command
6.1 Command Format
The parameter configuration Command is supported in the sleep operation mode, which means that the pins in
low latency operation mode are set to high level (MD0 = 1, MD1 = 1).
Table 6-1 Command Overview Form

No. Command Command Function

Set the module parameters. The parameters set by this Command can be
1 0xC0
saved after power off.
Set the module parameters. The parameters set by this Command are not
2 0xC2
saved after power off.
3 0xC6 Configure data encryption key of the module

4 0xC1 + 0xC1 + 0xC1 Read module parameters

5 0xC3 + 0xC3 + 0xC3 Read the hardware version of the module

6 0xC4 + 0xC4 + 0xC4 Reset module Command

7 0xC5 + 0xC5 + 0xC5 Read the actual voltage of the module

8 0xC9 + 0xC9 + 0xC9 Restore default parameters

9 0xE1 + 0xE1 + 0xE1 Handshake command

10 0xF3 + 0xF3 + 0xF3 Read the software version of the module

11 0xAF + 0xAF + 0x73 + 0x00 + 0xAF +0xF3 Read RSSI of the current data signal directly

12 0xAF + 0xAF + 0x74 + 0x00 + 0xAF +0xF4 Read RSSI of the environmental signal directly

Detailed explanation of the command function, taking the default factory configuration as an example. See the
following form for details:
Table 6-2

Command Format Module Response Description

0xC0 ADDH ADDL SPEED CHAN The configuration succeeds and the ASCII string is returned. The
OK
OPTION（See the register description of parameters configured can be saved after power-off.
The configuration failed and the ASCII string is returned. The original
parameter configuration for details） ERROR
configuration parameters are not changed.
0xC2 ADDH ADDL SPEED CHAN The configuration succeeds and the ASCII string is returned. The
OK
OPTION parameters configured cannot be saved after power-off.
(See the register description of The configuration failed and the ASCII string is returned. The original
ERROR
parameter configuration for details） configuration parameters are not changed.

0xC6 + 16byte Configure key OK Data encryption succeeded

The module returns the present configuration parameters in
0xC1 0xC1 0xC1 C0 00 00 1A 17 40
hexadecimal format.
0xC3 0xC3 0xC3 AS32-TTL-1W-V3.0 The module returns the present hardware version in ASCII format.
The module generates a reset. During the reset process, the
module performs a self-test and the AUX outputs a low level. After
0xC4 0xC4 0xC4 OK the reset, the AUX output is high, and the module starts to work
normally. At this time, you can switch mode or initiate next
Command.
VH and VL are voltage data. For example, the module returns C5
0xC5 0xC5 0xC5 C5 VH VL 0C 1C, converts 0C 1C to decimal to get 3100, indicating that the
current voltage of the module is 3.1V.
0xC9 0xC9 0xC9 OK Restore default parameter configuration successfully

9
 When the user forgets the baud rate, it can be used to query by
0xE1 0xE1 0xE1 OK
baud rate until ‘OK’ is received.
0xF3 0xF3 0xF3 The module will return the current software version in ASCII format.
Read RSSI of the current data signal directly. For example, if the
0xAF 0xAF 0x73 0x00 0xAF 0xF3 XX module returns XX and converts it to decimal data, it indicates the
current signal strength.
Read RSSI of the environmental signal directly. For example, if the
0xAF 0xAF 0x74 0x00 0xAF 0xF4 XX module returns XX and converts it to decimal data, it indicates the
current signal strength.

6.2 Module Parameter Register

The module parameters can be modified in the sleep mode (i.e. MD0 = 1, MD1 = 1).
Configuring parameter register (Configuring parameter register cannot be used alone, it must be used according
to the command format of the configuration parameter, see Chapter 6, Section 6.1 for details)
Table 6-3 ADDH Module Address High 8-Bit Register

ADDH [ 7:0]

Read and Write Properties rw rw rw rw rw rw rw rw

Default Value 0 0 0 0 0 0 0 0

ADDH [ 7:0]: indicates the module address high byte, factory default 0x00
Table 6-4 ADDL Module Address Low 8-Bit Register

ADDL [ 7:0]

Read and Write Properties rw rw rw rw rw rw rw rw

Default Value 0 0 0 0 0 0 0 0

ADDL [7:0]: module address low byte, factory default 0x00

Table 6-5 SPEED Communication Configuration Register

UART CS [ 1: 0] UART BAUD [ 2: 0] AIR SPEED [ 2: 0]

Read and Write Properties rw rw rw rw rw rw rw rw

Default Value 0 0 0 1 1 0 1 0

SPEED [ 7: 6]
UART CS [ 1: 0]: UART parity bit
00: 8N1 (default)
01: 8O1
10: 8E1
11: Same as 8N1
SPEED [ 5: 3]
UART BAUD [ 2: 0]: UART baud rate
000: UART baud rate is 1200 bps
001: UART baud rate is 2400 bps
010: UART baud rate is 4800 bps
011: UART baud rate is 9600 bps (default)
100: UART baud rate is 19200 bps
101: UART baud rate is 38400 bps
110: UART baud rate is 57600 bps
111: UART baud rate is 115200 bps

10
SPEED [ 2: 0]
AIR SPEED [ 2: 0]: airspeed
000: Air speed is 0.3k
001: Air speed is 1.2k
010: Air speed is 2.4k (default)
011: Air speed is 4.8k
100: Air speed is 9.6k
101: Air speed is 19.2k
Remarks:

1) The air speeds of receiver and transmitter should be the same.

2) Some combinations of air speed and baud rate can send infinite data packet, please see below form for details.

Table 6-6

Baud Rate（bps
1200 2400 4800 9600 19200 38400 57600 115200
Air Speed（bps）
0.3K

1.2K √ √

2.4K √ √ √

4.8K √ √ √

9.6K √ √ √

19.2K √ √ √ √

√means supporting transmission of infinite data packet

Table 6-7 CHAN Channel Register

CHAN [ 7: 0]

Read and Write Properties rw rw rw rw rw rw rw rw

Default Value 0 0 0 1 0 1 1 1

CHAN [ 7: 0] ：frequency（410 + CHAN*1M）

Factory Default: 0x17 (433MHz)
00000000：0x00（ Min：410MHz ）
00011111：0x1F（ Max：441MHz ）
Table 6-8 OPTION Special Function Register
FixedTrans IOType WakeTime [ 2: 0] Reserved SendPower [ 1: 0]
mitEn
Read and Write Properties rw rw rw rw rw rw rw rw

Default Value 0 1 0 0 0 0 0 0

OPTION [7] FixedTransmitEn: Point-to-Point transmission enable

0: Transparent transmission (default)
1: Point-to-Point transmission
OPTION [6] IOType: IO port drive mode
0: TXD, AUX open output, RXD open input
1: TXD, AUX push-pull output, RXD pull-up input (default)
OPTION [ 5：3]
WakeTime [ 2：0]: Wireless wake-up time (it is the monitoring interval time for the receiver, for the transmitter it is
the time of continuous transmission of the wake-up code)
000:250ms (default)
001:500ms
010:750ms
011: 1000ms
100:1250ms
11
101:1500ms
110:1750ms
111:2000ms
Remarks:
wireless wake-up time is typical value

OPTION [2]: Reserved

OPTION [1:0] Send Power [1:0]: Reserved

6.3 Module Factory Setting

Table 6-9 Factory Configuration Form of Register:

Register Name ADDH ADDL SPEED CHAN OPTION

Register Parameter 00 00 1A 17 40

Table 6-10 Module Factory Parameter:

Operation Transmit
ID Address Factory Air Speed Baud Rate UART
Item Model Frequency Power
(HEX) Channel (Kbps) (bps) Format
(MHZ) (W)
AS32-TTL-1W 433.0 0x0000 23 2.4 9600 8N1 1

7. Module Functions
7.1 Overview of Module Functions
Table 7-1 Module Function Form
Data Format
Module Function Data Format of Transmitter Function Introduction
of Receiver
The data sent by random module can be received by the
Transparent
User data User data modules with the same address and channel. The data
broadcasting
transmission is transparent. What is sent is what is received.
Random module can be the transmitter. When it sends data
Point-to-Point Receiver address + receiver
User data to random module in point-to-point communication, the data
transmission channel + user data
can be transmitted across the channel.
Broadcast and
Broadcast: the data sent by random module can be received
monitor（in 0xFF+0xFF+receiver’s channel + by modules in the same channel at the same time;
User data
Point-to-Point user data Monitor: A module with a 0xFFFF address can receive data
transmission） sent by random address module on the same channel.
1.In transparent transmission
mode：（Auto add wake-up code
010101010······）+ user data
1. The transmitter in the wake-up mode can wake up the
receiver module in the power-saving mode in the air.
2.In Point-to-Point transmission
2. The module in the wake-up mode will automatically add
Wake on radio mode User data
the wake-up code when sending data.
：（Auto add wake-up code 3. The length of the wake-up code can be set by setting the
010101010······）+receiver’s wireless wake-up time.
address + receiver’s channel +
user data

The configuration of the receiving response delay time can

adjust the overall power consumption of the module. The
Low power
User data maximum configurable response delay of the module is
consumption
WakeTime=7. In this configuration, the average current of
the module is extremely low

12
7.2 Detailed Module Functions
7.2.1. Transparent Broadcasting
i. Function Description
The data sent by random module can be received by the modules with the same address and channel. The data
transmission is transparent. What is sent is what is received.
ii. Module Setting
1. MD0 = 0, MD1 = 0
2. The 7th bit of the OPTION Special Function Register needs to be configured to 0, transparent transmission
mode.
3. The addresses of the transmitter and the receiver are set to the same value.
4. The channels of the transmitter and the receiver are set to the same value.
For Example
Table 7-2

Transmitter Receiver
Module
0x0000（factory default） Module Address 0x0000（factory default）
Address
Module
0x17（factory default） Module Channel 0x17（factory default）
Channel
User data User data
Sending Data Output Data
0x11 0x22 0x33 0x11 0x22 0x33

7.2.2 Point-to-Point Transmission

i. Function Description
The data sent by random module can be received by appointed module. Multiple receivers of the same address
and channel all can receive the data
ii. Module Setting
1. MD0 = 0, MD1 = 0; MD0 =1, MD1 = 0
2. The 7th bit of the OPTION Special Function Register needs to be configured to 1, Point-to-Point transmission
mode.
3. The addresses of the transmitter and the receiver can be different.
4. The channels of the transmitter and the receiver can be different
iii. For Example
Table 7-3

Transmitter Receiver
Module Module
0xXXXX 0x5678
Address Address
Module Module
0xXXXX 0x18
Channel Channel
Receiver address high + receiver address low +
User data
receiver channel + data
Sending Data Output Data
0x56 0x78 0x18 0x11 0x22 0x33 0x11 0x22 0x33

13
7.2.3 Broadcast in Point-to-point Transmission
i. Function Description
The data sent by random module can be received by all modules of the same channel
ii. Module Setting
1. MD0 = 0, MD1 = 0; MD0 =1, MD1 = 0
2. The 7th bit of the OPTION Special Function Register needs to be configured to 1, Point-to-Point transmission
mode.
3. The addresses of the transmitter and the receiver can be different.
4. The channels of the transmitter and the receiver can be the different.
5. The first 3 bytes of the transmitter’s data must be 0xFF + 0xFF + receiver channel.
iii. For Example
Table 7-4

Transmitter Receiver

Module Module
0xXXXX 0xXXXX
Address Address
Module Module
0xXXXX 0x17（factory default）
Channel Channel
Sending 0xFF+0xFF+receiver channel + User data user data
Output Data
Data 0xFF 0xFF 0x17 0x11 0x22 0x33 0x11 0x22 0x33

7.2.4 Monitor in Point-to-point Transmission

i. Function Description
Any module can send data, and any module in the same channel can receive data.
ii. Module Setting
1. MD0 = 0, MD1 = 0; MD0 = 1, MD1 = 0
2. The 7th bit of the OPTION Special Function Register needs to be configured to 1, Point-to-Point transmission
mode.
3. The address of the monitor module must be set to 0xFFFF
4. The channel of the monitor module and the transmitter must be the same.
5. The first 3 bytes of the sending data must be 0xXX+0xXX+ monitor channel
iii. For Example
Table 7-5

Transmitter Receiver

Module Address 0x0000（factory default） Module Address 0xFFFF

Module Channel 0x17（factory default） Module Channel 0x17（factory default）

Random address high + Random
address low + receiver channel + User user data
Sending Data data Output Data
0xXX 0xXX 0x17 0x11 0x22 0x33 0x11 0x22 0x33

14
7.2.5 Wake on Radio
i. Function Description
The sender module in the wake-up working mode can wake up the receiver module in the power-saving working
mode in the air, and the module in the power saving working mode is always in the "sleep-monitoring" mode. If a
valid wake-up code is received during the "monitoring" process, the module will continue to be in the wake-up [2]
receiving mode and wait for the valid data packet to be received. Then AUX output low level, and after about 2ms
delay, open the UART, send the received wireless data through TXD, after completion, AUX output high level.
The module continues to enter the "sleep-monitor" working mode.
ii. Module Setting

1. Transmitter module: let the module be in the wake-up working mode（MD0 = 1，MD1 = 0）
2. The transmitter sets the wake-up code length by setting the wireless WakeTime [1]. Generally, the wireless
wakes up time of the transmitter module is greater than or equal to the monitoring interval of the receiver
module, ensuring that the receiver module can monitor to the wake-up code and receive it. When the air wakes
up successfully, the receiver module will continue to be awake until the data reception is completed. If the
wake-up code is not monitored, the air wakes up fails.
3. Transmitter module: let the module be in the power saving working mode（MD0 = 0，MD1 = 1）
4. Set the monitoring interval WakeTime [1] of the receiver module to ensure that the receiving module can receive
a valid wake-up code within the monitoring interval.

7.2.6 Low Power Consumption

i. Function Description
The wireless module is in a command mode, and it periodically monitors whether the wake-up code is received. If
the wake-up code is not received, the module will remain in the "sleep-monitor" mode. If the wake-up code is
received during the process of the monitor and wake-up, the module will continue to be in wake-up mode until
the data is received, and it opens the UART and sends the data. By setting different monitoring intervals, the
module has different receive response delays (up to 2s) and average power consumption. Users need to balance
the communication latency and average power consumption time.
ii. Module Setting

1. Set the operation mode of the module to power saving mode（MD0 = 0，MD1 = 1）
2. set the module's wireless WakeTime [1]
Remarks:

1) For the setting of WakeTime, see OPTION register of module Parameter Configuration Command in Chapter 6.2.
2) The average power consumption is determined by the duty cycle of the highest power consumption and the lowest power consumption.
The power consumption of the module is affected by the space velocity, baud rate, wake-up time, and number of transmitted bytes.

15
8. Sequence Diagram
8.1 Sequence Diagram of Data Transmission

8.2 Sequence Diagram of Module Switch

When the module switches from any operation mode to the next operation mode, there will be a switching delay
T_sc. After switching to the next operation mode, the module will always work in the operation mode after the
switching, if the module does not perform other operation mode switching. The operation mode switching has
nothing to do with the previous operation mode of the module. The programmer only needs to perform the mode
switching delay during the switching process, then selects MD0 and MD1 pins of low latency operation mode for
the high- and low-level operations. And you can switch to the desired operation mode.

Table 8-1

Symbol Explanation Min Value Typical Value Max Value Unit

Wait till the last data packet is transmitted to
T1 2 ms
make sure the module is idle
T2 Debounce delay 3 ms

T3 Start modes switch 3 ms

T4 To tell if the mode switch is done 2 ms

T_sc Mode switch delay ms

Remarks:

Modes can be switched when AUX is high level, at this time, the module is ideal; If AUX is low level, it means the module is busy. The sending
(receiving) is not empty, the data has not been sent (received), and the user needs to add a delay. After waiting for the data to be sent and
received, the working mode can be switched.

16
8.3 Sequence Diagram of Module Command
Sequence Diagram of Command as Below:
8.3.1 Command of Parameter Configuration

8.3.2 Command of encryption key configuration

8.3.3 Command of Reading Configured Parameter

8.2.4 Command of Reading Module Hardware Version

8.2.5 Command of Module Reset

8.3.6 Command of reading module actual voltage

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8.3.7command of restoring default parameters

8.3.8 Handshake Command

8.3.9. Command of reading module software version

8.3.10. Reading RSSI of current data signal Command

8.3.11. Reading RSSI of environmental signal Command

Remarks:

Table 8-1
Minimu Typical Maximu
Parameter name T_answer Description Unit
m value value m value
T_C0/C2 Parameter configuration delay 140 ms
Reading module configured parameter
T_C1 2.93 ms
delay
T_C3 Reading module hardware version delay 2.80 ms
Command response
T_C4 Waiting module reset delay 2.80 ms
delay
T_C5 Reading module voltage delay 2.83 ms

T_C6 Configuring module encryption key delay 140 ms

T_C9 Restoring default parameter delay 48.40 ms

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 T_E1 Handshake response delay ms

T_F3 Reading module software version delay 2.87 ms

T_AF3/AF4 Reading RSSI delay ms

Delay of waiting for data
T_Packet Delay of one data packet transmission ms
transmission completion

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9. Package Information
9.1 Machine Size (unit: mm)

9.2 Reference Pad Design (unit: mm)

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10. Package Manner
10.1 Electrostatic Bag Package

10.2 Pallet Package (unit: mm)

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 Important Remarks and Disclaimers

As the hardware and software of the product continue to improve, this manual may be subject to change, and the
final version of the manual shall prevail.
Users of this product need to pay attention to the product dynamics on the official website, so that users can get
the latest information of this product in time.
The pictures and diagrams used in this manual to explain the functions of this product are for reference only.
The measured data in this specification are all measured by our company at room temperature for reference only.
Please refer to the actual measurement for details.
Chengdu Ashining Technology Co., Ltd. reserves the right of final interpretation and modification of all contents in
this manual

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