PCF8575 I2C I/O Expansion Board

The PCF8575 I/O Expansion Board is a powerful and reliable tool for expanding the I/O capabilities of microcontrollers. It uses the I2C communication protocol to control up to 16 bidirectional input/output pins. On board 3.3V level converter, if you don't solder the VCC-VDD pad, the PCF8575 level is 3.3V. If you solder it, the level will be the same with VCC.

Features: 

Available Library: PCF8575

Working Voltage: 2.5 - 5.5V DC

Working Current: 100mA (Max)

I2C Address: 0x20(default), can be modified by soldering A1 and A2 selection pads.

16 individually addressable pins

Each pin configurable for input or output

Open-drain interrupt output pin for input change interrupt

Size: 3.2 x 2.1cm 

Package Includes: 

1 x I2C IO Expansion Board

Compatible Header Pins