Ebyte E32-900T30D User manual

E32-900T30D User Manual
SX1276 868MHz/915MHz DIP Wireless Module

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 1
Contents
DISCLAIMER......................................................................................................................................3
FEATURES............................................................................................................................................................................4
1.OVERVIEW.......................................................................................................................................5
1.1 INTRODUCTION..............................................................................................................................................................5
2.SPECIFICATION AND PARAMETER......................................................................................... 5
2.1 LIMIT PARAMETER......................................................................................................................................................... 5
2.2 OPERATING PARAMETER................................................................................................................................................ 6
3 SIZE AND PIN DEFINITION.........................................................................................................7
4 CONNECT TO MCU........................................................................................................................8
5 FUNCTION DESCRIPTION...........................................................................................................9
5.1 FIXED TRANSMISSION....................................................................................................................................................9
5.2 BROADCASTING TRANSMISSION.................................................................................................................................... 9
5.3 BROADCASTING ADDRESS............................................................................................................................................. 9
5.4 MONITOR ADDRESS..................................................................................................................................................... 10
5.5 RESET..........................................................................................................................................................................10
5.6 AUX DESCRIPTION...................................................................................................................................................... 10
5.6.1 Indication of UART output................................................................................................................................... 10
5.6.2 Indication of wireless transmitting...................................................................................................................... 11
5.6.3 Configuration procedure of module..................................................................................................................... 11
5.6.4 Notes for AUX...................................................................................................................................................... 11
6 OPERATING MODE.....................................................................................................................12
6.1 MODE SWITCH.............................................................................................................................................................12
6.2 NORMAL MODE (MODE 0)........................................................................................................................................... 13
6.3 WAKE-UP MODE (MODE 1)...........................................................................................................................................13
6.4 POWER-SAVING MODE (MODE 2)................................................................................................................................. 14
6.5 SLEEP MODE (MODE 3)................................................................................................................................................ 14
7 COMMAND FORMAT..................................................................................................................14
7.1 DEFAULT PARAMETERS................................................................................................................................................ 15
7.2 READING OPERATING PARAMETERS.............................................................................................................................15

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 2
7.3 READING VERSION NUMBER........................................................................................................................................15
7.4 RESET COMMAND........................................................................................................................................................15
7.5 PARAMETER SETTING COMMAND................................................................................................................................ 15
8 BASIC OPERATION..................................................................................................................... 17
8.1 HARDWARE DESIGN.....................................................................................................................................................17
9 FAQ.................................................................................................................................................. 18
9.1 COMMUNICATION RANGE IS TOO SHORT......................................................................................................................18
9.2 MODULE IS EASY TO DAMAGE.....................................................................................................................................19
9.3 BER(BIT ERROR RATE)IS HIGH..................................................................................................................................19
10 PRODUCTION GUIDANCE...................................................................................................... 19
10.1 REFLOW SOLDERING TEMPERATURE..........................................................................................................................19
10.2 REFLOW SOLDERING CURVE......................................................................................................................................20
REVISION HISTORY...................................................................................................................... 20
ABOUT US......................................................................................................................................... 20

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，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 E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 4
Features
Advanced LoRa modulation, with the advantage of long-distance anti-interference;
Under ideal conditions, the communication distance can reach 8km, and the transmission distance is better than
traditional GFSK;
Fixed-point transmission, broadcast transmission, channel monitoring;
FEC forward error correction to improve communication stability;
Air wake-up (ultra-low power consumption), suitable for battery applications;
Adopt industrial-grade active temperature-compensated crystal oscillator to ensure its stability and consistency;
The maximum transmit power is 30dBm, and the software is multi-level adjustable；
Support 868/915MHz EU general frequency band;
The data transmission rate of 0.3k～19.2kbps;
3.3~5.5V power supply, power supply greater than 3.3V can guarantee the best performance;
Industrial-grade standard design, supporting long-term use at -40～+85℃;
IPEX/stamp hole interface for easy connection of coaxial cable or external antenna.

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 5
1. Overview
1.1 Introduction
E32-900T30D is a wireless serial port module (UART) based
on SEMTECH’s SX1276 RF chip. It has multiple transmission
modes, working in the 862MHz~931MHz, LoRa spread spectrum
technology, TTL output.
SX1276 features LoRa™,which will bring longer
communication distance, and has the advantages of concentrated
power density, meanwhile it has a very strong confidentiality.The
modules of 30dBm transmitting power adopt industrial grade
crystal oscillators to ensure the stability and consistency with air data rate 2.4kps. It is widely applied in utility meters,
IoT renovation, smart home, etc. The modules feature data encryption and compression.
E32-900T30D strictly follows design standards of FCC, CE, CCC and meets various RF certification requirements
for exporting.
1.2 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
Remarks
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

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
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2.2 Operating parameter
Main parameter
Performance
Remark
Min
Typ.
Max.
Operating voltage（V）
3.3
5.0
5.5
≥5.5 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）
862
868
931
Support ISM band
Power
consumpti
on
Transmitting current [mA]
650
Instant power consumption
Receiving current [mA]
25
Turn-off current [μA]
5
Software is shut down
Max Tx power（dBm）
30
Receiving sensitivity（dBm）
-145
-147
-148
Air data rate is 2.4kbps
Main parameter
Description
Remark
Distance for reference
8km
Test condition：clear and open area, antenna gain: 5dBi，
antenna height: 2.5m，air data rate: 2.4kbps
TX length
58 Byte
Maximum capacity of single package, automatic
sub-packing after exceeding.
Buffer
512 Byte
Modulation
LoRa™
Communication interface
TTL
@3.3V
Package
DIP
Connector
DIP
1*7*2.54mm spacing
Size
24* 43 mm
Antenna
SMA-K
50 ohm impedance

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
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3 Size and pin definition
No.
Name
Direction
Function
1
M0
Input
（weak pull-up）
With M1, the four working modes of the module can be determined (it
cannot be suspended, and it can be grounded if it is not used).
2
M1
Input
（weak pull-up）
With M0, the four working modes of the module can be determined (it
cannot be suspended, and it can be grounded if it is not used).
3
RXD
Input
TTL UART input ,Connect to external TXD output pins; Can be configured
as drain open circuit or pull up input, see parameter Settings
4
TXD
Output
TTL UART output, Connect to external RXD input pin; Can be configured as
drain open circuit or push - pull output, see parameter Settings
5
AUX
Output
Used to indicate the working status of the module; The user wakes up the
external MCU and outputs low level during self-test initialization; Can be
configured as drain open output, or push-pull output, see parameter Settings
(can be suspended)
6
VCC
Input
Positive reference of module power supply, voltage range: 3.3v ~ 5.5V DC

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 8
7
GND
Input
Ground
8
Fix hole
9
Fix hole
10
Fix hole
4 Connect to MCU
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.

Chengdu Ebyte Electronic Technology Co., Ltd E32-900T30D User Manual
Copyright ©2012–2021，Chengdu Ebyte Electronic Technology Co.,Ltd. 9
5 Function description
5.1 Fixed transmission
5.2 Broadcasting transmission
5.3 Broadcasting address
For example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;