MCP23X17 16-Bit GPIO Expander Evaluation Board

The MCP23X17 16-bit GPIO Expander Evaluation Board demonstrates simple input/output functionality of the MCP23017 (I2C interface) and the MCP23S17 (SPI interface). The system demonstrates the simplicity of monitoring four pins configured as inputs and applying a predetermined pattern on LEDs connected to the remaining 12 pins configured as outputs. The MCP23017/MCP23S17 (MCP23X17) device family provides 16-bit, general purpose parallel I/O expansion for I2C bus or SPI applications. The two devices differ only in the serial interface MCP23017 – I2C interface and MCP23S17 – SPI interface.

• Demonstrates the MCP23X17 devices in a simple I/O application
• ICSP header for the PICmicro allows users to customize firmware to further evaluate the MCP23X17
• Jumpers and headers allow the MCP23X17 to connect directly to custom applications for prototype work
• Can be powered from a 3.0V to 5V DC power source (connected to the 5V and GND test points)