PCF8575 I2C IO Expansion Module

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Description:

The PCF8575 module is an expansion board that increases available I/O pins using the I2C interface, providing 16-bit quasi-bidirectional input/output pins. It's perfect for Arduino and microcontroller-based projects.

Key Features:

1. I2C Interface: Easy integration with microcontrollers.
2. 3.3V Level Converter: Supports 3.3V and configurable to VCC.
3. Operating Voltage: 2.5V to 5.5V DC.
4. Working Current: Max 100mA.
5. Configurable I2C Address: Default 0x20, adjustable via A1 and A2 pads.
6. 16 Addressable Pins: Independently configurable as input or output.
7. Interrupt Output: Open drain interrupt pin for input change detection.
8. Versatile Applications: Ideal for controlling relays, buzzers, buttons, LEDs, etc.

Applications:

Perfect for expanding I/O capabilities in projects, enhancing the functionality of microcontrollers like Arduino UNO R3.