Waveshare MCP23017 IO Expansion Board Expands 16 I/O Pins for Raspberry Pi

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 / 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
PIN    I2C
VCC    Power supply, 3.3V/5V
GND    Ground
SDA    I2C data line
SCL    I2C clock line
INTA    PA group interrupt output
INTB    PB group interrupt output

Wiki:http://www.waveshare.com/wiki/MCP23017_IO_Expansion_Board

Package Included:

1* MCP23017 Board

1* Cable