Ebyte E22-400T22D - Connect to MCU

Chengdu Ebyte Electronic Technology Co.,Ltd. E22-400T22D User Manual
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(suspending is allowed).
6
VCC
Power supply
Module power supply positive reference, voltage range: 2.3 ～ 5.5V DC
7
GND
Power supply
Ground
8
Fixed hole
Fixed hole（Connect to GND on the module）
9
Fixed hole
Fixed hole（Connect to GND on the module）
10
Fixed hole
Fixed hole
（
Connect to GND on the module
）
4. Connect to MCU
No.
Description（STM8L MCU）
1
The UART module is TTL level, please connect with TTL level MCU.
2
For some MCU works at 5V DC, it may need to add 4～10K pull-up resistor for the TXD & AUX pin.