Features : Modul ekspansi I/O dengan interface Port I2C, dapat digunakan lebih dari dua I/O sampai delapan t I / O sehingga output 64 I/O Maximum features : 1 supports two types of access interfaces target board: Pin or strip (2) support the I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules) Typical applications : The I / O resource constraints the MCU I / O expansion Major resources : PCF8574, I2C interface, the 8-bit parallel Kompetibel : Raspberrry Pi , Arduino, mikro kontroller yang mempunyai port I2C
Contoh penggunaan : - https://magnusglad.wordpress.com/2013/03/16/arduino-lcd/ - http://garagelab.com/profiles/blogs/tutorial-arduino-i-o-port-expander-with-pcf8574 - http://wiringpi.com/extensions/i2c-pcf8574/