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Have you run out of I/O pins? This great IC allows the user to expand up to 16 I/O using only two I/O for control! The PCF8575C is controlled through an I2C interface and features 16-bits of quasi-bidirectional input/output pins. Checkout the datasheet for more info!

Features:

• 16 individually addressable pins Interrupt output pin

Dimensions: 25.4x25.4mm (1x1")

Documents:

• PCF8575C Information Page
• PCF8575C Datasheet
• Example I2C Project
• Example AVR code
• mbed Example