Recommended Wiring Diagram; Functional Details; Module Reset; Aux Description - Ebyte E43-900T13S3 User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
17 NC
18 NC
19 GND
20 GND
21 ANT
22 GND

4. Recommended wiring diagram

No.
1
2 For some MCU works at 5VDC, it may need to add 4~10K pull-up resistor for the TXD & AUX pin.

5. Functional Details

5.1 Module Reset

When the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the
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operating mode on the basis of the user parameters. During the process, the AUX keeps low level. After the process
completed, the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0.
Therefore, the user needs to wait the AUX rising edge as the starting point of module's normal work..

5.2 AUX description

AUX Pin can be used as indication for wireless send & receive buffer and self-check.
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Description（STM8L MCU）
The UART module is TTL level, please connect with the MCU of TTL level.
E43-900T13S3 User manual
Ground wire
Ground wire
Antenna
Ground wire
8