Ⅳ Recommended Wiring Diagram; Ⅴ Detailed Function; Module Reset - Ebyte E49-400T30S Specifications

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20 Input/Output
NC
21
NC Input
22
NC Input
23
GND Input
24
NC Input
Ⅳ Recommended wiring diagram
Serial A brief description of the connection between the module and the microcontroller (the above picture
Number
1 The wireless serial port module is TTL level, please connect with TTL level MCU.
Some 5V microcontrollers may need to add 4~10K pull-up resistors to the TXD and AUX pins of the
2
Ⅴ Detailed function

5.1 Module reset

After the module is powered on, AUX will output a low level immediately, perform hardware self-test, and set
the working mode according to user parameters. During this process, the AUX keeps the low level, and after the
completion, the AUX outputs the high level, and starts to work normally according to the working mode formed by
the combination of M1 and M0. Therefore, the user needs to wait for the rising edge of AUX as the starting point
for the normal operation of the module.
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NC pin, this pin needs to be left floating (for subsequent expansion)
download port --VCC
(Hanging, users do not need to pay attention)
download port –SWDIO (Hanging, users do not need to pay attention)
download port --GND
(Hanging, users do not need to pay attention)
download port --SWCLK (Hanging, users do not need to pay attention)
takes the STM8L microcontroller as an example)
E49-400T30S Specifications
module.
6