Chengdu Ebyte Electronic Technology Co., Ltd.
E22-230T22S User manual
Copyright ©2012–2018,Chengdu Ebyte Electronic Technology Co.,Ltd.
10
4. Connect to MCU
No.
Description(STM8L MCU)
1
The UART module is TTL level.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.