Ebyte E22-900T30D User manual

E22-900T30D User Manual
868M/915M 30dBm DIP new LoRa Wireless Module

CONTENTS
1. OVERVIEW.................................................................................................................................. 3
1.1 INTRODUCTION..............................................................................................................................................................4
1.2 FEATURES...................................................................................................................................................................... 4
1.3 APPLICATION................................................................................................................................................................. 5
2. SPECIFICATION AND PARAMETER..................................................................................... 5
2.1 LIMIT PARAMETER.........................................................................................................................................................5
2.2 OPERATING PARAMETER................................................................................................................................................5
3 SIZE AND PIN DEFINITION.........................................................................................................6
4. CONNECT TO MCU...................................................................................................................... 7
5 FUNCTION DESCRIPTION.......................................................................................................... 8
5.1 FIXED TRANSMISSION....................................................................................................................................................8
5.2 BROADCASTING TRANSMISSION....................................................................................................................................8
5.3 BROADCASTING ADDRESS............................................................................................................................................. 9
5.4 MONITOR ADDRESS....................................................................................................................................................... 9
5.5 RESET............................................................................................................................................................................9
5.6 AUX DESCRIPTION........................................................................................................................................................9
5.6.1 Indication of UART output.................................................................................................................................... 9
5.6.2 Indication of wireless transmitting...................................................................................................................... 10
5.6.3 Configuration procedure of module.................................................................................................................... 11
5.6.4 Notes for AUX...................................................................................................................................................... 11
6 OPERATING MODE..................................................................................................................... 11
6.1 MODE SWITCHING....................................................................................................................................................... 11
6.2 NORMAL MODE（MODE 0）...................................................................................................................................... 12
6.3 WOR MODE（MODE 1）........................................................................................................................................... 12
6.4 CONFIGURATION MODE（MODE 2）.......................................................................................................................... 13
6.5 DEEP SLEEP MODE（MODE 3）..................................................................................................................................13
7 REGISTER READ AND WRITE CONTROL............................................................................13
7.1 COMMAND FORMAT.....................................................................................................................................................13
7.2 REGISTER DESCRIPTION.............................................................................................................................................. 14
7.3 FACTORY DEFAULT PARAMETER...................................................................................................................................16
8 REPEATER NETWORKING MODE..........................................................................................17

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
9 CONFIGURATION INSTRUCTIONS ON COMPUTER......................................................... 18
10 HARDWARE DESIGN................................................................................................................ 19
11 FAQ................................................................................................................................................ 20
11.1 COMMUNICATION RANGE IS TOO SHORT....................................................................................................................20
11.2 MODULE IS EASY TO DAMAGE.................................................................................................................................. 20
11.3 BER(BIT ERROR RATE)IS HIGH............................................................................................................................. 20
12 PRODUCTION GUIDANCE...................................................................................................... 21
12.1 REFLOW SOLDERING TEMPERATURE......................................................................................................................... 21
12.2 REFLOW SOLDERING CURVE......................................................................................................................................21
13 E22 SERIES.................................................................................................................................. 22
14 ANTENNA RECOMMENDATION............................................................................................22
15 PACKAGE FOR BULK ORDER............................................................................................... 23
REVISION HISTORY...................................................................................................................... 23
ABOUT US......................................................................................................................................... 23

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
3
Disclaimer
EBYTE reserves all rights to this document and the information contained herein.
Products, names, logos and designs described herein may in whole or in part be
subject to intellectual property rights. Reproduction, use, modification or disclosure to
third parties of this document or any part thereof without the express permission of
EBYTE is strictly prohibited.
The information contained herein is provided “as is” and EBYTE assumes no
liability for the use of the information. No warranty, either express or implied, is given,
including but not limited, with respect to the accuracy, correctness, reliability and
fitness for a particular purpose of the information. This document may be revised by
EBYTE at any time. For most recent documents, visit www.ebyte.com.

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1. Overview
1.1 Introduction
E22-900T30D is a wireless module (UART) based on SX1262 with multiple
transmission modes, working in the 850.125MHz~930.125MHz, (default
868.125MHz). It features LoRa spread spectrum technology, TTL level output,
compatible with 3.3V and 5V IO port voltage.
E22-900T30D adopts a new generation of LoRa spread spectrum technology.
Compared with the traditional SX1278 solution, it has a longer transmission
distance, faster speed, lower power consumption, and smaller size; it supports
functions such as air wake-up, wireless configuration, carrier monitoring, automatic
relay. communication keys and sub-package length setting. Ebyte provides
customized development services on it.
1.2 Features
SX1262 LoRa chip brings further communication distance and stronger anti-interference ability;
Supports automatic relay network, multilevel relay used in long distance communication, the same area to run
multiple network running at the same time;
The communication allows users to set key that cannot be read, greatly improving the user data privacy;
Supports LBT function, before sending channel environmental noise monitoring, can greatly increase the success
rate of communication module in harsh environment;
RSSI signal strength indicator function, can be used to assess the signal quality, improve the communication
network and distance;
Wireless parameters configuration, sent via wireless instruction packet, or read a wireless remote configuration
module parameters;
Air wake up, that is, ultra-low power consumption function, suitable for a battery-powered application solutions;
Supports fixed transmission, radio transmission, channel to monitor;
Deep sleep mode enables 2 uA power consumption;
Global free license ISM 868/915 MHZ band;
Under ideal conditions, the communication distance can be up to 10 km;
Supports parameter electricity saving, electricity again after the module will work according to set good parameters;
Effective watchdog design, once an exception occurs, the module will be in automatic restart, and can continue to
work on previous parameter;
0.3 k ~ 62.5 kbps air data rate;
3.3 V to 5.5 V power supply, over 5V power supply can ensure the best performance;
Industry-standard design, support - 40 ~ + 85 ℃ under long time use;
Size and shape are consistent with E32 series module, which can be directly replaced to improve performance and

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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distance.
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.
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）
3.3
5.0
5.5
≥5.0 V ensures output power
Communication level（V）
3.3
For 5V TTL, It is recommended to add
level conversion
Operating temperature（℃）
-40
-
85
Industrial design
Operating frequency（MHz）
850.125
868.125
930.125
Support ISM band
Power
consumpti
on
TX current(mA)
-
650
-
Instant power consumption
RX current (mA)
-
16
-
Sleep current（μA）
-
2
-
Software is shut down
Max Tx power（dBm）
29.5
30.0
30.5
Receiving sensitivity（dBm）
-146
-147
-148
Air data rate 2.4kbps
Air data rate（bps）
0.3k
2.4k
62.5k
To control via user’s program

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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Main parameter
Description
Remark
Distance for reference
10km
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 2.4kbps
TX length
240 Byte
Can be configured via command as 32/64/128/240 bytes
per packet to transmit
Buffer
1000 Byte
Modulation
LoRa
Communication interface
UART
TTL level
Package
DIP
Connector
1*7*2.54mm
Size
24*43 mm
Antenna
SMA-K
50 ohm impedance
3 Size and pin definition

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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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.
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 (suspending is allowed).
6
VCC
Input
Power supply ：3.3~ 5.5V DC
7
GND
Input
Ground
8
Fixed hole
-
Connect to GND
9
Fixed hole
-
Connect to GND
10
Fixed hole
-
Connect to GND
4. Connect to MCU

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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No.
Description（STM8L MCU）
1
The UART module is TTL level.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
5 Function description
5.1 Fixed transmission
5.2 Broadcasting transmission

Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T30D User Manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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5.3 Broadcasting address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, the purpose of
broadcast is realized.
5.4 Monitor address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;
When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of monitor is
realized.
5.5 Reset
When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the operating mode based
on user’s parameters. During the process, the AUX remains low level. After the process completed, the AUX outputs high level and
starts to work as per the operating mode combined by M1 and M0. Therefore, users need to wait the AUX rising edge as the start of
module’s normal work.
5.6 AUX description
AUX Pin can be used as indication for wireless send & receive buffer and self-check.
It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sent through
UART, or whether the module is still in the process of self-check initialization.
5.6.1 Indication of UART output
To wake up external MCU