PCF8575 - 16 BIT I2C SMBus General Purpose I/O Expander Module

PCF8575 - 16 BIT I2C SMBus General Purpose I/O Expander Module

The PCF8575 I/O Expander Module is based on PCF8575 Chip. The PCF8575 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

• Working voltage: 2.5 - 5.5VDC
  
• 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.
• Ideal for R3 and other MCUs to simple relay, buzzer, button, led.