Ebyte E32-TTL-1W User Manual

SX1278 Wireless Module E32 Series User Manual
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 12 / 24
3.1.5 E32-433T30S
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
Input
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 open-drain output or push-pull output (floating is allowed).
6
VCC
Input
Voltage reference of module. Power supply 2.6V ~ 5.5V DC
7
GND
Input
Ground
8
RESET
Input
Reset pin when program is loading（floating，users do not need to connect）
9
GND
Input
Ground pin when program is loading (floating，users do not need to connect）
10
SWIM
Input
SWIM pin when program is loading (floating，users do not need to connect）
11
+3.3V
Input
Power supply pin when program is loading (floating，users do not need to
connect）
12
PB3
Input / Output
NC pin，need to be floating，not connected（for further development）
13
PB1
Input / Output
NC pin，need to be floating，not connected（for further development）
14
PB0
Input / Output
NC pin，need to be floating，not connected（for further development）
15
GND
Ground
16
GND
Ground
17
GND
Ground
18
ANT
Output
Antenna connector(high level output, 50 characteristic impedance)

Ebyte E32-TTL-1W Specifications

General

Brand	Ebyte
Model	E32-TTL-1W
Category	Wireless modules
Language	English