Ebyte E32 Series, User Manual

Page: 10 / 24

SX1278 Wireless Module E32 Series User Manual
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 10 / 24
3.1.3 E32-T100S2
Pin No. Pin item Pin direction Application
1 M0
Input Work with M1 & decide the four operating modes.
（weak pull-up） Floating is not allowed, can be ground.
2 M1
Input Work with M0 & decide the four operating modes.
（weak pull-up） Floating is not allowed, can be ground.
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
To wake up the external MCU, during the procedure of self-check initialization, the pin
outputs low level.
Can be configured as open-drain output or push-pull output
Floating is allowed
6 VCC Input
Voltage reference of module
Power supply 2.3V ~ 5.5V DC
7 GND Input Ground
8 ANT Output Antenna interface
（
high frequency signal output
）
9 GND Output Reference places of high frequency signal output
10 GND Input Ground
11 GND Input
Ground