MCP23017 16-Bit I/O Expander Module I2C Interface GPIO Port Extension Board

The MCP23017 can convert 16-bit parallel data into serial data for the IIC interface and vice versa.
It integrates an on-chip power-on reset (POR) circuit, resetting to the default state of the device. Two opposing programmable interrupt sources are available. The polarity inversion register can configure the polarity of GPIO inputs.




Operating temperature range: -40°C to 85°C
Operating voltage: 1.8V to 5.5V
IIC communication frequency: up to 1.7 MHz
Operating current: 1uA 

ICC from device address




VCC: Power supply pin;
INTA: Interrupt output at port A;
INTB: Interrupt output at port B;
SCL: Clock signal line in IIC mode
SDA: Data signal line in IIC mode
/RESET: Level reset device
A0, A1, A2: Address configuration pins for 1IC device, default is 0100000x, IIC bus can support up to 8 identical devices
GPA0 to GPA7: 8-bit input/output pins at port A (default input mode)
GPB0 to GPB7: 8-bit input/output pins at port B (default input mode)

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