Chengdu Ebyte Electronic Technology E22900T22S User Manual
E22-900T22S User Manual
SX1262 SMD Wireless Module
CONTENTS
1. OVERVIEW
1.1 INTRODUCTION
1.2 FEATURES
1.3 APPLICATION
1.4 FUNCTION INTRODUCTION
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2. SPECIFICATION AND PARAMETER
2.1 LIMIT PARAMETER
2.2 OPERATING PARAMETER
3. SIZE AND PIN DEFINITION
4. CONNECT TO MCU
5. FUNCTION DESCRIPTION
5.1 FIXED TRANSMISSION
5.2 BROADCASTING TRANSMISSION
5.3 BROADCASTING ADDRESS
5.4 MONITOR ADDRESS
5.5 RESET
5.6 AUX DESCRIPTION
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5.6.1 Indication of UART output
5.6.2 Indication of wireless transmitting
5.6.3 Configuration procedure of module
5.6.4 Notes for AUX
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6. OPERATING MODE
6.1 MODE SWITCHING
6.2 NORMAL MODE（MODE 0）
6.3 WOR MODE（MODE 1）
6.4 CONFIGURATION MODE（MODE 2）
6.5 DEEP SLEEP MODE（MODE 3）
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7. REGISTER READ AND WRITE CONTROL
7.1 COMMAND FORMAT
7.2 REGISTER DESCRIPTION
7.3 FACTORY DEFAULT PARAMETER
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Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
8. REPEATER NETWORKING MODE
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9. CONFIGURATION INSTRUCTIONS ON COMPUTER
10. HARDWARE DESIGN
11. FAQ
11.1 COMMUNICATION RANGE IS TOO SHORT
11.2 MODULE IS EASY TO DAMAGE
11.3 BER(BIT ERROR RATE) IS HIGH
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12. PRODUCTION GUIDANCE
12.1 REFLOW SOLDERING TEMPERATURE
12.2 REFLOW SOLDERING CURVE
13. E22 SERIES
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14. ANTENNA RECOMMENDATION
15. PACKAGE FOR BATCH ORDER
REVISION HISTORY
ABOUT US
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Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
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1. Overview
Communication distance tested is up to 5km
Support air date rate of 0.3kbps～62.5kbps;
Support new generation LoRa technology based on SX1262;
Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption
Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%;
Low power consumption for battery supplied applications;
Support 2.3V~5.5V power supply, power supply over 5.0 V can guarantee the best performance;
Industrial grade standard design, support -40 ~ 85 °C for working over a long time;
IPEX and stamp hole optional, good for secondary development and integration.
Home security alarm and remote keyless entry;;
1.1 Introduction
E22-900T22S is a wireless serial port module (UART) based on SEMTECH's SX1262 RF chip. Working in the
902MHz~928MHz, (default 900.125MHz), LoRa spread spectrum technology, TTL level output, compatible with
3.3V and 5V IO port voltage.
LoRa direct sequence spread spectrum technology will bring longer communication distance, and has the
advantages of concentrated power density and strong anti-interference ability. The module has a software FEC
forward error correction algorithm, which has high coding efficiency and strong error correction capability. In the
case of sudden interference, it can actively correct the interfered data packets, greatly improving reliability and
transmission distance. When without FEC, such packets can only be discarded.
The module has data encryption. Data transmitted over the air, with randomness, makes data interception
meaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces to
provide custom development services.It supports packet length setting and also supports different real-time and
data packets.
1.2 Features
Maximum transmission power of 182.8mW;
Support the global license-free ISM 915MHz band;
of software is reduced by 35%;
1.3 Application
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
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Smart home and industrial sensors;
Wireless alarm security system;
Building automation solutions;
Wireless industrial-grade remote control;
Health care products;
Advanced Meter Reading Architecture(AMI);
Automotive industry applications.
LoRa spread spectrum: LoRa direct sequence spread spectrum technology will bring longer communication distance;
High confidentiality, extremely low probability of interception; strong anti-interference ability, strong suppression of
LBT: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors the
RSSI: The signal strength indication function. The module supports packet signal strength serial output. Can be used to
Wireless configuration: Remotely configure or read wireless module parameters by sending command packets
Networking function: The module can implement multi-level repeater networking. Multi-level repeater is suitable for
Ultra-low power consumption: the air wake-up function. It is especially suitable for battery-powered applications: when
Fixed-point transmission: supports address function, the host can transmit data to any address, any channel, to achieve
Broadcast monitoring: Set the module address to 0xFFFF, which can monitor the data transmission of the module on the
Forward error correction: The module has FEC forward error correction algorithm, which has high coding efficiency and
1.4 Function introduction
low transmit power density, it is not easy to cause interference to other equipment.
co-channel interference and various noises; excellent anti-multipath fading performance.
channel environment noise before transmitting. If the noise exceeds the threshold, it will be sent delayed. This feature can
greatly improve the communication success rate of the module in harsh environments. This function can be used for
network transmission and anti-collision processing.
assess signal quality, improve communication networks, and ranging. The module supports ambient noise signal strength
serial output. It can be used to implement LBT functions manually.
wirelessly.
ultra long-distance communication. Multiple networks in the same area can run simultaneously.
the module is in WOR state, the configuration module WOR monitors the overall power consumption of the adjustable
module. The maximum configurable response delay of the module is 4000ms. The average current of the module in this
mode is about 2uA.
networking, repeater and other application. For example: module A transmits data to module B (address is 0x00 01,
channel is 0x80), date is AA BB CC, the communication format is: 00 01 80 AA BB CC, where 00 01 is the module B address
and 80 is the module B channel, then module B can receive the AA BB CC (other modules do not receive data).
same channel; the transmitted data can be received by the module of any address on the same channel, thus playing the
role of broadcasting and monitoring.
strong error correction capability. In the case of sudden interference, it can actively correct the interfered data packets,
greatly improving reliability and transmission distance. When without FEC, such packets can only be discarded.
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
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Deep sleep function: When the module is in sleep mode, mode 3, the wireless receiver is turned off and the
Watchdog: The module has a built-in watchdog and performs precise time layout. Once an exception occurs, the
Parameter saving: After the user sets the parameters, the module parameters will be saved, the power will not be lost,
Applicable environment: 900MHz is free frequency band, users can use it directly without application; 900MHz features
2. Specification and parameter
Main parameter
Performance
Remark
Min.
Max.
Power supply（V）
0
5.5
Voltage over 5.5V will cause permanent
damage to module
Blocking power（dBm）
-
10
Chances of burn is slim when modules
are used in short distance
Operating temperature（℃）
-40
85
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Main parameter
Performance
Remark
Min.
Typ.
Max.
Operating voltage（V）
2.3
5.0
5.5
≥5.0 V ensures output power
Communication level（V）
3.3
For 5V TTL, it may be at risk of burning
down
Operating temperature（℃）
-40-85
Industrial design
Operating frequency（MHz）
-
Support ISM band
Power
consump
tion
TX current（mA）
133
Instant power consumption
RX current（mA）
11
Sleep current （μA）
469
Software is shut down
Max Tx power（dBm）
Receiving sensitivity（dBm）
-146
-147
-148
Air data rate is 2.4kbps
Air data rate（bps）
0.3k
2.4k
62.5k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
micro-controller is in a sleep state; at this time, the power consumption of the whole device is about 2uA.
module will restart within 1 second and continue to work according to the previous parameter settings.
and the module will work according to the set parameters after power-on.
certain penetration and diffraction ability, suitable for environment with small data volume, long transmission distance
and easy to be interfered.
2.1 Limit parameter
2.2 Operating parameter
902
- - -
928
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
5000m Test condition：clear and open area, antenna gain: 3dBi，
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
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antenna height: 2.5m，air data rate: 2.4kbps
TX length
240 Btye
Can be configured via command as 32/64/128/240
bytes per packet to transmit
Buffer
1000 Btye
Modulation
No.
Name
Direction
Function
1
GND
Ground
LoRa
Communication interface UART
Package SMD
Connector 1.27mm
Size 16 * 26 mm
Antenna IPEX/stamp hole 50 ohm impedance
3. Size and pin definition
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual
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2
GND
Ground
3
GND
Ground
4
GND
Ground
5
M0
Input
（weak pull-up）
Work with M1 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
6
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if not
used, could be grounded).
7
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input.
8
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be
configured as open-drain or push-pull output
9
AUX
Output
To indicate module ’ s working status & wakes up the external MCU.
During the procedure of self-check initialization, the pin outputs low level.
Can be configured as push-pull output (suspending is allowed).
10
VCC
Power supply ：2.3~ 5.2V DC
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GND
Ground
12
NC
13
GND
Ground
14
NC
15
NC
16
NC
17
NC
18
NC
19
GND
Ground
20
GND
Ground
21
ANT
Antenna
22
GND
Ground
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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