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The MCP23017 is a 16-bit, general purpose parallel I/O port expander for I2C bus applications.
The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB). The MCP23017 can be configured to operate in 8-bit or 16-bit modes
Features
- 16-bit remote bidirectional I/O port
- I/O pins default to input - • High-speed I2C™ interface (MCP23017)
- 100 kHz
- 400 kHz
- 1.7MHz - Three hardware address pins to allow up to eight devices on the bus
- Operating Voltage: 1.8V to 5.5V