MCP23S18 expander equivalent, 16-bit i/o expander.
* 16-bit remote bidirectional I/O port: - I/O pins default to input
* Open-drain outputs: - 5.5V tolerant - 25 mA sink capable (per pin) - 400 mA total
* High.
The two devices differ only in the serial interface.
* MCP23018 - I2C interface
* MCP23S18 - SPI interface The .
I2C PINOUT DESCRIPTION (MCP23018)
24L QFN 24 1 2 3 4 5 6 7 8 23 9 10 11 12 13 14 15 16 17 18 19 20 21 22 — 25 24L Pin SSOP Type 2 3 4 5 6 7 8 9 10 1 11 12 13 14 15 16 17 18 19 20 21 22 23 24 — — I/O I/O I/O I/O I/O I/O I/O I/O P P I I/O I I O O I/O .
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