| Management number | 234965899 | Release Date | 2026/07/02 | List Price | $1.00 | Model Number | 234965899 | ||
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The I/O Expander - MCP23008 lets you add another eight pins to your microcontroller using an MCP23008 port expander. The MCP23008 uses two I2C pins which can be shared with other I2C devices, and in exchange gives you eight general purpose pins.
You can set each of eight pins to be input, output, or input with a pull-up. There's even the ability to get an interrupt via an external pin when any of the inputs change so you don't have to keep polling the chip.
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