Recommended Wiring Diagram - Ebyte E43-433T13S3 User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
7 RXD
8 TXD
9 AUX
10 VCC
11 GND
12 NC
13 GND
14 NC
15 NC
16 NC
17 NC
18 NC
19 GND
20 GND
21 ANT
22 GND

4. Recommended wiring diagram

No.
1 The UART module is TTL level, please connect with the MCU of TTL level.
For some MCU works at 5VDC, it may need to add 4~10K pull-up resistor for the TXD & AUX pin.
2
Copyright ©2012–2018, Chengdu Ebyte Electronic Technology Co.,Ltd.
TTL UART inputs, connects to external TXD output pin. Can be configured as
Input
open-drain or pull-up input. See details in parameters setting.
TTL UART outputs, connects to external RXD input pin. Can be configured as
Output
open-drain or push-pull output. See details in parameters setting.
To indicate module's working status & wakes up the external MCU. During the
Output procedure of self-check initialization, the pin outputs low level. Can be configured
as open-drain output or push-pull output (floating is allowed).
Power supply reference: 1.8V~5.5V DC
Ground wire
Ground wire
Ground wire
Ground wire
Antenna
Ground wire
Description（STM8L MCU）
E43-433T13S3 User manual
4