PCF8575 IO Expander Module I2C To 16 IO Integrated Circuits For Arduino

Descriptions Have you run out of I O pins This great module allows the user to expand up to 16 I O using only two I O for control The PCF8575 is controlled through an I2C interface and features 16 bits of quasi bidirectional input output pins On board 3 3V level converter circuit if you donot solder VCC VDD pad the PCF8575 level is 3 3V If you solder it the level will be the same with VCC Features Available library PCF8575Working voltage 2 5 5 5V DCWorking 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 outputOpen drain interrupt output pin for input change interrupt Great for R3 and other MCU to control simple relay buzzer button led Size 4x2 1cm 1 57x0 83inchPackage includes 1 x PCF8575 IO Expander Module