DESCRIPTION:

• 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:

• for Arduino available library: PCF8575 • 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. • Great for Arduino UNO R3 and other MCU to control simple relay, buzzer, button, led. specifications: • Supply voltage: 2.5 - 5.5V DC • Signal voltage: 2.5 - 5.5V (same as supply voltage) • GPIO voltage: 2.5 - 5.5V (same as supply voltage) • Maximum GPIO input current (sink): 25mA • Maximum GPIO output current (source): 1mA • Maximum GPIO output current combined (sink source): 100mA • Number of extra IO pins: 16 • Chip: PCF8575 • Communication: - Interface: I2C - Default address: 0x20 (can be changed with A1 and A2 solder pads) • Dimensions PCB: 33 x 21mm