MCP23017 serial interface module compatible with Arduino

High-speed I2C interface: 100kHz, 400kHz or 1.7 MHz Configurable interrupt output spins: configurable as an active high, active low or open drain Configurable interruption source: interrupt-on change made of configured register, default settings or PIN changes Low standby current: 1UA (max.) Max. Sensification current: up to 20mA per I/O-PIN Polarity reversal register for configuring the polarity of the input sports data External reset receipt Operating tension: from 2.7V to 5.5V

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