The MCP23017 I2C to GPIO Converter Module is a versatile 16-bit I/O expander that converts parallel data to serial I2C data and vice versa. It features programmable interrupt outputs, polarity inversion registers for GPIO inputs, and integrated power-on reset (POR) functionality. With a wide operating voltage range and high I2C communication frequency, it is ideal for expanding GPIO functionality in embedded systems and IoT applications.

Features:

• 16-bit I/O Expansion: Expands GPIO functionality with 16 I/O pins through I2C communication.
• Wide Voltage Range: Operates between 1.8V to 5.5V, offering compatibility with various devices.
• I2C Communication Frequency: Supports up to 1.7MHz for fast data transfer.
• Low Power Consumption: Only 1uA of operating current, making it suitable for power-sensitive applications.
• Interrupt Outputs: Provides two programmable interrupt outputs (INTA and INTB) for A and B port events.
• Polarity Inversion: Configurable GPIO input polarity for flexible circuit design.
• Address Configuration: Configurable device address using A0, A1, A2 pins; supports up to 8 devices on the same I2C bus.
• Default Input Mode: All GPIO pins (GPA0GPA7, GPB0GPB7) default to input mode for easy integration.

Applications:

• GPIO Expansion for Embedded Systems: Ideal for expanding GPIO pins in microcontrollers or embedded systems with limited I/O.
• IoT Devices: Perfect for adding additional I/O interfaces to IoT devices that communicate via I2C.
• Sensor Interfaces: Useful for connecting multiple sensors or peripheral devices that require extra I/O capabilities.
• Interrupt-driven Systems: Excellent for applications that require interrupt handling, such as external event detection or monitoring systems.
• Low Power Projects: Suitable for battery-powered devices or energy-efficient designs with its low current consumption.