Chengdu Ebyte Electronic Technology Co,, Ltd
4 Connect to MCU
No.
1
The UART module is TTL level., please collect with MCU.
2
For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.
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Description(STM8L MCU)
E70-433T14S2 user manual
7