MCP23017/MCP23S17
16-Bit I/O Expander with Serial Interface
Features
16-Bit Remote Bidirectional I/O Port: - I/O pins default to input
High-Speed I2C Interface (MCP23017): - 100 kHz - 400 kHz - 1.7 MHz
High-Speed SPI Interface (MCP23S17): - 10 MHz (maximum)
Three Hardware Address Pins to Allow Up to Eight Devices On the Bus
Configurable Interrupt...
