Ebyte E22-230T22S - Connect to Mcu

Chengdu Ebyte Electronic Technology Co., Ltd. E22-230T22S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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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.