Waveshare MCP23017 IO Expansion Board I2C Interface Expands 16 I/O Pins Stack to 8 pcs for Raspberry Pi Raspberry Pi 4B+ 4B 3B+ 3B 2B+ Zero W WH 2 W Micro:bit Ardui STM32

Special Features

MCP23017 port expander, I2C controlled, expands 2 signal pins as 16 I/O pins
MCP23017 16 bit GPIO, I2C address configurable by shorting the A0/A1/A2 jumpers
MCP23017 module provides two connector options: PH2.0 terminal and/or solder pads, allows multi I2C modules to be stacked
MCP23017 board onboard voltage translator, compatible with 3.3V/5V level
MCP23017 I/O expansion board, comes with development resources and manual (examples for Raspberry Pi / micro:bit / Ardui / STM32)

Description

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