7Semi MCP23017 I2C to 16 IO Expander Breakout Board
The 7Semi MCP23017 I2C to 16 IO Expander Breakout Board is designed to expand the digital I/O capability of microcontrollers using the trusted MCP23017 I2C IO Expander IC.
It provides exactly 16 configurable GPIO pins over a single I2C bus, reducing wiring complexity while maintaining stable performance.
Each pin can be independently set as input or output, and the onboard interrupt feature allows the controller to respond instantly to pin state changes.
This MCP23017 Breakout Board is compact, easy to integrate, and ideal for applications such as home automation, robotics, industrial control panels, and any project that requires multiple digital inputs and outputs without consuming extra microcontroller pins.
Features:
- 16 I/O Pins: Converts two signal pins into sixteen completely customizable I/O pins.
- Multi-board Expansion: For larger applications, stack up to 8 boards to provide up to 128 I/O pins.
- Configure I2C addresses by setting the A0, A1, and A2 jumpers.
- Dual Connectivity: Includes PH2.0 terminal and solder pad choices for simple connection.
- Wide Compatibility: Compatible with both 3.3V and 5V systems, ensuring platform versatility.
- Interrupt Support: The INTA and INTB interrupt pins are used for real-time signal handling.
- Development Resources: Includes detailed instructions and sample projects for Raspberry Pi, Arduino, STM32, and micro.
- Easy Integration: The I2C interface, combined with a 4Pin 2.0 mm JST connector, provides for an easy and flexible connection to any MCU.