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E22-400T22S
User Manual
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Ebyte E22-400T30S, E22-400T22S User Manual

E22-400T30S User Manual
SX1268 433/470MHz 1W SMD Wireless Module
CONTENTS
1. OVERVIEW ............................................................................................................................................. 3
2. SPECIFICATION AND PARAMETER ................................................................................................. 5
3 SIZE AND PIN DEFINITION ................................................................................................................ 7
4. CONNECT TO MCU ............................................................................................................................. 8
5 FUNCTION DESCRIPTION .................................................................................................................. 9
5.6.1 Indication of UART output .................................................................................................................................................... 10
5.6.2 Indication of wireless transmitting ..................................................................................................................................... 11
5.6.3 Configuration procedure of module ................................................................................................................................. 12
5.6.4 Notes for AUX ........................................................................................................................................................................... 12
6 OPERATING MODE ............................................................................................................................ 12
6.1 MODE SWITCHING ......................................................................................................................... 13
7 REGISTER READ AND WRITE CONTROL ....................................................................................... 14
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
8 REPEATER NETWORKING MODE ................................................................................................... 18
9 CONFIGURATION INSTRUCTIONS ON COMPUTER .................................................................. 19
10 HARDWARE DESIGN ....................................................................................................................... 20
11 FAQ ...................................................................................................................................................... 21
12 PRODUCTION GUIDANCE.............................................................................................................. 22
13 E22 SERIES ......................................................................................................................................... 23
14 ANTENNA RECOMMENDATION ............................................................................................... 24
15 PACKAGE FOR BATCH ORDER ...................................................................................................... 25
REVISION HISTORY ............................................................................................................................... 25
ABOUT US ................................................................................................................................................ 25
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
3
1. Overview
1.1 Introduction
E22-400T30S is a wireless serial port module (UART) based
on SEMTECH's SX1268 RF chip. It has multiple transmission
modes, LoRa spread spectrum technology, TTL level output,
compatible with 3.3V and 5V IO port voltage.
With PA and LNA, the power is 1W based on originally
imported SX1262 module, the receiving sensitivity is improved accordingly. LoRa direct sequence spread spectrum
technology will bring longer communication distance, and has the advantages of concentrated power density and
strong anti-interference ability. It is different from FSK and GFSK.
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 packet.
1.2 Features
⚫ Communication distance tested is up to 10 km； ⚫ Maximum transmission power of 1W, software multi-level adjustable； ⚫ Support the global license-free ISM 433MHz band； ⚫ Support air date rate of 0.3kbps～62.5kbps； ⚫ Support new generation LoRa technology based on SX1268； ⚫ Support RSSI for evaluating signal quality, improving communication network, and ranging; ⚫ Support LBT for monitoring channel environmental noise before sending data, and for improving
communication.
⚫ Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption
of software is reduced by 35%;
⚫ Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%; ⚫ Low power consumption for battery supplied applications； ⚫ Support 3.3V~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.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
4
1.3 Application
⚫ Home security alarm and remote keyless entry； ⚫ 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.
1.4 Function introduction
⚫ LoRa spread spectrum: LoRa direct sequence spread spectrum technology will bring longer communication distance; low
transmit power density, it is not easy to cause interference to other equipment.
⚫ High confidentiality, extremely low probability of interception; strong anti-interference ability, strong suppression of co-
channel interference and various noises; excellent anti-multipath fading performance.
⚫ LBT: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors the
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.
⚫ RSSI: The signal strength indication function. The module supports packet signal strength serial output. Can be used to
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.
⚫ Wireless configuration: Remotely configure or read wireless module parameters by sending command packets wirelessly.
⚫ Networking function: The module can implement multi-level repeater networking. Multi-level repeater is suitable for
ultra long-distance communication. Multiple networks in the same area can run simultaneously.
⚫ Ultra-low power consumption: the air wake-up function. It is especially suitable for battery-powered applications: when
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.
⚫ Fixed-point transmission: supports address function, the host can transmit data to any address, any channel, to achieve
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).
⚫ Broadcast monitoring: Set the module address to 0xFFFF, which can monitor the data transmission of the module on the
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.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
5
⚫ Forward error correction: The module has 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.
⚫ Deep sleep function: When the module is in sleep mode, mode 3, the wireless receiver is turned off and the micro-
controller is in a sleep state; at this time, the power consumption of the whole device is about 2uA.
⚫ Watchdog: The module has a built-in watchdog and performs precise time layout. Once an exception occurs, the module
will restart within 1 second and continue to work according to the previous parameter settings.
⚫ Parameter saving: After the user sets the parameters, the module parameters will be saved, the power will not be lost,
and the module will work according to the set parameters after power-on.
⚫ Applicable environment: 433MHz is free frequency band, users can use it directly without application; 433MHz features
certain penetration and diffraction ability, suitable for environment with small data volume, long transmission distance and easy to be interfered.
2. Specification and parameter
2.1 Limit 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
/
2.2 Operating parameter
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）
410.125
-
493.125
Support ISM band
Power
consump
tion
TX current（mA）
610
Instant power consumption
RX current（mA）
17
Sleep current （μA）
2
Software is shut down
Max Tx power（dBm）
29.5
30.0
30.5
Receiving sensitivity（dBm）
-147
-148
-149
Air data rate is 2.4kbps
Air data rate（bps）
0.3k
2.4k
62.5k
Controlled via user’s programming
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
6
Main parameter
Description
Remark
Distance for reference
10000m
Test condition：clear and open area, antenna gain:
5dBi，antenna height: 2.5m，air data rate: 2.4kbps
TX length
1000 Btye
Can be configured via command as 32/64/128/240
bytes per packet to transmit
Buffer
1000 Btye
Modulation
GFSK
LoRa
Communication interface
UART
Package
SMD
Connector
2.54 mm
Size
40.5*25 mm
Antenna
IPEX/stamp hole
50 ohm impedance
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
7
3 Size and pin definition
No.
Name
Direction
Function
1
M0
Input
（weak pull-up）
Work with M1 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
2
M1
Input
（weak pull-up）
Work with M0 to decide 4 working modes of module (not suspended, if
not used, could be grounded).
3
RXD
Input
TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be
configured as open-drain or pull-up input. Ground
4
TXD
Output
TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be
configured as open-drain or push-pull output
5
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 (can be suspended).
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400T30S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
8
6
VCC
Input
Power supply ：3.3~ 5.5V DC
7
GND
Input
Ground
8
NC
Input
can be suspended
9
GND
Input
Ground
10
NC
Input
can be suspended
11
NC
Input
can be suspended
12
NC
Input/output
can be suspended
13
NC
Input/output
can be suspended
14
NC
Input/output
can be suspended
15
GND
Ground
16
GND
Ground
17
GND
Ground
18
ANT
output
High frequency signal output, 50 ohm characteristic impedance
4. Connect to MCU
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