Overview

The MCP23017 IO Expansion Board expands 2 signal pins as 16 I/O pins based on the I2C bus, up to 8 MCP23017 IO Expansion Board can be used at the same time, providing up to 128 I/O pins, it is compatible with both 3.3V and 5V levels.

Features

• I2C controlled, expands 2 signal pins as 16 I/O pins
• I2C address configurable by shorting the A0/A1/A2 jumpers
• Provides two connector options: PH2.0 terminal and/or solder pads, allows multi I2C modules to be stacked
• Onboard voltage translator, compatible with 3.3V/5V level
• Comes with development resources and manual (examples for Raspberry Pi / micro:bit / Arduino / STM32)

Specifications

• Operating voltage: 5V/3.3V
• Interface: I2C
• Interrupt pins: INTA, INTB
• Expansion I/Os: 16
• Dimension: 38mm × 23mm
• Mounting hole size: 2.0mm

Interface Definition

Dimensions

1. MCP23017 IO Expansion Board x1
2. PH2.0 20cm 6Pin x1