1. VCC: positive power supply, generally connected to 5V power supply;
2. GND: Negative power terminal, generally grounded.
3. RESET: reset signal, generally connected to the low level effective;
4. INT: interrupt the input, generally connected to the low level effective;
5. SCL: IIC clock input, generally connected to high level effective;
6. SDA: IIC data input\/output, generally connected to high level effective;
7. TP: touch panel input, generally connected to high level effective;
8. LED: LED positive electrode, generally connected to 5V power supply;
9. LED- : LED negative electrode, generally grounded.