Connect To Mcu - Ebyte E49-400T20D User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.
4 TXD
5 AUX
VCC
6
7 GND
8 GND
9 GND
10 GND

4. Connect to MCU

No.
1
2 For some MCU works at 5V DC, it may need to add 4～10K pull-up resistor for the TXD & AUX pin.
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Output
TTL UART output, connects to external RXD input pin.
Output
To indicate module ' s working status & wakes up the external MCU. During the
procedure of self-check initialization, the pin outputs low level.
Module power supply positive reference, voltage range: 2.6V ~ 3.3V DC
Ground
Ground
Ground
Ground
Description（STM8L MCU）
The UART module is TTL level, please connect with TTL level MCU.
E49-400T20D User Manual
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