IO Expander

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Revision as of 12:03, 11 November 2015 by Cartridge1987 (talk | contribs) (general info)

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General info

Based on the MCP23008 (I2C) or MCP23S08 (SPI) IO expander chips from Microchip.

I2C address:
0100 000 tru 0100 111 (jumper selectable)

SPI address:
0100 000 tru 0100 011 (jumper selectable)

physical dimensions

  • Board outline: 50x25mm
  • Mounting hole diameter: 3mm
  • Mounting hole pitch: 44x19mm (3mm from board edge)

using the board