PCF8575 I²C 16-Bit I/O Expander Module – Remote GPIO Extension Board

Description

1. PCF8575
2. Operating voltage: 2.5-5.5VDC
3. Operating current: 100mA (max)
4. I2C address: 0x20 (default), can be changed by soldering A1 and selection pads A2.

Features:

1. 16 individually addressable pins.
2. Each pin configurable for input or output
3. Open drain interrupts output pin for input change interrupt.
4. Ideal for R3 and other MCUs to simple relay, buzzer, button, led.

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