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Chengdu Ebyte Electronic Technology Co., Ltd.
TX length
Buffer
Modulation
Communication interface
Package
Connector
Size
Antenna
3 Size and pin definition
No.
Name
1
GND
2
VCC
3
AUX
4
TXD
5
RXD
6
M1
7
M0
11
ANT
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
240 Byte
1000 Byte
LoRa
UART
SMD
2.54mm
25*40.5mm
IPEX/stamp hole
Direction
Module ground
Input
Power supply ：3.3~ 5.5V DC
Input
Used to indicate the working status of the module; the user wakes up the
Output
external MCU, and the Output is low during the power-on self-test
initialization Level; (can be left floating)
Output
TTL serial port output，connect to external RXD Input pin；
Input
TTL serial port input, connect to external TXD output pin
work with M0, to define 4 working mode(not floated,connect to ground
Input（weak
pull-up）
when not using )
work with M1, to define 4 working mode(not floated,connect to ground
Input（weak
when not using )
pull-up）
Antenna, 50ohm impedance
Output
antenna height: 2.5m，air data rate: 2.4kbps
Can be configured via command as 32/64/128/240 bytes
per packet to transmit
TTL level
50 ohm impedance
Function
E22-400T33S User Manual
5
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