Symbol

MCP23017

16-bit I2C GPIO expander — interrupt output, 1.7MHz I2C

⚡ Install this symbol

Paste this into Claude Code (VS Code panel, Adom editor, or terminal) to install:

Search the Adom Wiki for the symbol "MCP23017" (slug: sym-mcp23017) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/symbols/sym-mcp23017. Download the .kicad_sym file from the wiki page's static assets. Add it to my current KiCad project's symbols/ directory and register in sym-lib-table.
Category Interface
Library Interface_Expansion
Symbol MCP23017_SO
Pins 28
Package SOIC-28
Schematic Symbol

AI Skill Technical Reference

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MCP23017

Symbol: MCP23017_SO Library: Interface_Expansion Category: Interface Pins: 28 Package: SOIC-28

Description

The MCP23017 from Microchip is a 16-bit I/O expander with I2C interface. Two 8-bit ports, individually configurable, with interrupt-on-change capability. Up to 8 devices on one I2C bus (128 GPIO). Standard for expanding GPIO on Raspberry Pi and Arduino. SOIC-28.

KiCad Library Reference

This symbol is from the official KiCad Interface_Expansion library. Full identifier: Interface_Expansion:MCP23017_SO

To use in your project:

  1. Open the Symbol Library Manager in KiCad
  2. Search for MCP23017_SO
  3. Place the symbol in your schematic

Sub-Skills
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Sub-skills are community-contributed AI skill extensions for this component. They teach AI assistants about specific tools, configurators, or workflows.

Examples:

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0 revisions · KiCad Library: Interface_Expansion:MCP23017_SO · Updated 2026-03-02 17:31:36