Symbol

ATmega328P-A

8-bit AVR microcontroller — the heart of the Arduino Uno, 32KB flash, 23 GPIO, TQFP-32

⚡ Install this symbol

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

Search the Adom Wiki for the symbol "ATmega328P-A" (slug: sym-atmega328p-a) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/symbols/sym-atmega328p-a. 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 Microcontroller
Library MCU_Microchip_ATmega
Symbol ATmega328P-A
Pins 32
Package TQFP-32
Schematic Symbol

AI Skill Technical Reference

Edit AI Skill

ATmega328P-A

Symbol: ATmega328P-A Library: MCU_Microchip_ATmega Category: Microcontroller Pins: 32 Package: TQFP-32

Description

The ATmega328P is an 8-bit AVR RISC microcontroller from Microchip (formerly Atmel). Famous as the MCU powering the Arduino Uno and Nano, it features 32KB flash, 2KB SRAM, 1KB EEPROM, 23 GPIO pins, 6 ADC channels, SPI, I2C, UART, and three timers. Operating at up to 20MHz, it remains one of the most widely used microcontrollers in education and hobbyist projects. The -AU variant is the TQFP-32 surface-mount package.

KiCad Library Reference

This symbol is from the official KiCad MCU_Microchip_ATmega library. Full identifier: MCU_Microchip_ATmega:ATmega328P-A

To use in your project:

  1. Open the Symbol Library Manager in KiCad
  2. Search for ATmega328P-A
  3. Place the symbol in your schematic

Sub-Skills
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What are Sub-Skills?

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

Examples:

  • A manufacturer’s configuration tool for a motor controller
  • A community-written design guide for an amplifier circuit
  • An automated test/validation script for a sensor module

How to add one: Click Add Sub-Skill, provide the URL to your skill and a brief description. Submissions are reviewed by the Adom team before going live.

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0 revisions · KiCad Library: MCU_Microchip_ATmega:ATmega328P-A · Updated 2026-03-02 17:31:36