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Description
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 Boards can be used at the same time by selecting different addresses for each module, providing up to 128 I/O pins!
This module is compatible with both 3.3V and 5V levels. Examples are provided for Raspberry Pi, micro:bit, Arduino and more!
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
- Online 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
Resources
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 |
Package Contents
- 1x MCP23017 IO Expansion Board
- 1x PH2.0 20cm 6-pin cable
