Ebyte E22-400M22S User Manual
E22-400M22S User Manual
SX1268 433/470MHz SMD Wireless Module
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400M22S User manual
1
目录
1. OVERVIEW 2
1.1 INTRODUCTION .................................................................................................................................................................................... 2
1.2 FEATURES ............................................................................................................................................................................................. 2
1.3 APPLICATION ........................................................................................................................................................................................ 2
2. SPECIFICATION AND PARAMETER 3
2.1 LIMIT PARAMETER ............................................................................................................................................................................... 3
2.2 OPERATING PARAMETER .................................................................................................................................................................... 3
3. SIZE AND PIN DEFINITION 4
4. BASIC OPERATION 5
4.1 HARDWARE DESIGN ............................................................................................................................................................................ 5
4.2 SOFTWARE PROGRAMMING ............................................................................................................................................................... 6
5. BASIC APPLICATION 7
5.1 BASIC CIRCUIT ..................................................................................................................................................................................... 7
6. FAQ 7
6.1 COMMUNICATION RANGE IS TOO SHORT ......................................................................................................................................... 7
6.2 MODULE IS EASY TO DAMAGE .......................................................................................................................................................... 8
6.3 HIGH BIT ERROR RATE ........................................................................................................................................................................ 8
7. WELDING OPERATION GUIDANCE 8
7.1 REFLOW SOLDERING TEMPERATURE ............................................................................................................................................... 8
7.2 REFLOW SOLDERING CURVE ............................................................................................................................................................. 9
8. RELATED MODEL 9
9. ANTENNA TYPE 10
9.1 ANTENNA RECOMMENDATION .......................................................................................................................................................... 10
REVISION HISTORY 11
ABOUT US 11
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400M22S User manual
2
1. Overview
1.1 Introduction
The E22-400M22S is based on the SX1268, a new generation of LoRaTM
RF chip manufactured by Semtech, USA. It is an ultra-small and self-
developed 433MHz, 470MHz SMD LoRaTM wireless module.
Because it adopted the original SX1268 as main core, so the anti-
interference performance and communication distance have been further
improved compared to the previous generation LoRaTM transceiver.Due to its
new LoRaTM modulation technology, the anti-interference performance and
communication distance are far superior to the current FSK and GFSK
modulation products. This module is mainly for smart home, wireless meter reading, scientific and medical research, and
long distance wireless communication equipment. The RF performance and components selection are all in accordance
with industrial-grade standards and this products obtained FCC, CE and RoHS certification already and so users do not
need to worry about the performance. Adopted industrial grade high precision 32MHz crystal, the product can cover an
ultra-wide frequency range of 410~493MHz and is backward compatible with SX1278 and SX1276.
Since the module is a RF transceiver module only, users need to use the MCU driver or use a dedicated SPI debug tool.
1.2 Features
l Communication distance tested is up to 7km；
l Maximum transmission power of 160mW, software multi-level adjustable；
l Support the global license-free ISM 433MHz/470MHz band；
l Support air date rate of 0.018-62.5kbps in the LoRa
l Support 300kpbs in the FSK mode;
l Compared with the transceiver of SX1278/SX1276;
l With large capacity, FIFO supports 256Byte data cache.;
l New SF5 spreading factor to support dense networks;
l Support 2.5V~3.7V power supply, more than 3.3V power supply can guarantee the best performance;
l Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
l IPEX and stamp hole optional, good for secondary development and integration.
TM
mode；
1.3 Application
l Home security alarm and remote keyless entry；
l Smart home and industrial sensors；
l Wireless alarm security system；
l Building automation solutions；
l Wireless industrial-grade remote control；
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-400M22S User manual
3
Main parameter
Performance
Remark
Min.
Max.
Power supply（V）
0
3.7
Voltage over 3.7V 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
-
Main parameter
Performance
Remark
Min.
Typ.
Max.
Operating voltage（V）
1.8
3.3
3.7
≥3.7 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
433/470/49
0
493
Support ISM band
Power
consumpti
on
TX current（mA）
-
100
-
Instant power consumption
RX current（mA）
-
6.5
-
-
Sleep current （μA）
-
180
-
Software is shut down
Max Tx power（dBm）
21.4
21.5
22.3
-
Receiving sensitivity（dBm）
-144
-146
-147
Air data rate is 0.3kbps
Air data rate（bps）
0.6k - 300k
Controlled via user’s programming
0.018k
-
62.5k
Controlled via user’s programming
Main parameter
Description
Remark
Distance for reference
7000m
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 0.3kbps
FIFO
256Byte
Maximum length of single transmission
Crystal frequency
32MHz
-
Modulation
LoRa
-
Package
SMD
-
Connector
1.27mm
Stamp hole
l Health care products；
l Advanced Meter Reading Architecture(AMI)；
l Automotive industry applications.
2. Specification and parameter
2.1 Limit parameter
2.2 Operating parameter
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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