E32-433T30S - Ebyte E32 Series User Manual

SX1278 Wireless Module

3.1.5 E32-433T30S

Pin No. Pin item
1 M0
2 M1
3 RXD
4 TXD
5 AUX
6 VCC
7 GND
8 RESET
9 GND
10 SWIM
11 +3.3V
12 PB3
13 PB1
14 PB0
15 GND
16 GND
17 GND
18 ANT
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Pin direction
Input Work with M1 & decide the four operating modes.
（weak pull-up） Floating is not allowed, can be ground.
Input Work with M0 & decide the four operating modes.
（weak pull-up） Floating is not allowed, can be ground.
TTL UART inputs, connects to external (MCU, PC) TXD output pin.
Input
Can be configured as open-drain or pull-up input.
TTL UART outputs, connects to external RXD (MCU, PC) input pin.
Output
Can be configured as open-drain or push-pull output
To indicate module's working status & wakes up the external MCU. During
Input the procedure of self-check initialization, the pin outputs low level. Can be
configured as open-drain output or push-pull output
Input
Voltage reference of module.
Input Ground
Input
Reset pin when program is loading（floating，users do not need to connect）
Input
Ground pin when program is loading (floating，users do not need to connect）
Input
SWIM pin when program is loading (floating，users do not need to connect）
Power supply pin when program is loading (floating，users do not need to
Input
connect）
Input Output
/ NC pin，need to be floating，not connected（for further development）
Input Output
/ NC pin，need to be floating，not connected（for further development）
Input Output
/ NC pin，need to be floating，not connected（for further development）
Ground
Ground
Ground
Output
Antenna connector(high level output, 50 characteristic impedance)
Application
(floating is
Power supply 2.6V ~ 5.5V DC
E32 Series User Manual
allowed).
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