Módulo de puerto I2C a IO MCP23017 Interfaz serie Expansor de puerto de E/S de 16 bits Puerto serie I2C IIC

VCC: power supply pin.

INTA: Port A interrupt output; INTB: Port B interrupt output

INTB: Port B interrupt output.

SCL: IIC clock signal line

SDA: IIC data signal line

SDA: IIC data signal line /RESET: level reset device

A0, A1, A2: 1IC device address configuration pins, default 0100000x, the IIC bus can be expanded by 8 identical devices.

GPA0~GPA7: 08-bit input/output pins on A-side (default input mode)

GPB0~GPB7: Port B 8-bit input/output pin (default input mode)