MCP23017 I/O Expander Module (I2C)

About this product

16-bit I/O expander module communicating over I2C, adding 16 additional GPIO pins to any microcontroller with only two data lines. Useful for keypad matrices, LED arrays, and projects that have run out of native GPIO.

Communication, control and breakout modules - Bluetooth, Wi-Fi, RF, relay and more.

Need a datasheet, a substitute, or bulk pricing? Mention it in your quote request and we'll reply with options.

Specifications

Chip

MCP23017

I/O pins

16

Interface

I2C

Application

GPIO expansion, keypad/LED matrices