ATMega328P 32kB Microcontroller with Arduino Uno Optiboot Bootloader

$4.95 ea

  • Part no.: 2129334
  • Manufacturer: Arduino
  • Manufacturer no.: A000048
# of units Price
1+ $4.95
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ATMega328P Microcontroller with Arduino Uno Optiboot Bootloader

ATMega328 32kB Flash microcontroller with pre-loaded Arduino UNO Optiboot bootloader.


  • High Performance, Low Power AVR® 8-Bit Microcontroller
  • Advanced RISC Architecture
  • High Endurance Non-volatile Memory Segments
  • Real Time Counter with Separate Oscillator
  • Six PWM Channels
  • Power-on Reset and Programmable Brown-out Detection
  • Internal Calibrated Oscillator
  • 23 Programmable I/O Lines
  • 28-pin PDIP package
  • Operating Voltage: 1.8-5.5V
  • Temperature Range: -40°C to +85°C
  • Speed: Up to 20MHz
  • Also available without the pre-loaded bootloader (blank): P/N 2139111

    Note: You will also need the Optiboot hardware libraries installed in your Arduino IDE. Not all add-on libraries are compatible with the Optiboot bootloader. (As of IDE version 0022). If you are using Arduino IDE v1.0, the Optiboot libraries are pre-loaded. Just select Arduino Uno from the Tools > Board menu.

    Compatible Sockets

  • DIP Socket, 28-pin, 2.54mm, 0.3" Center Line, Ladder Style
  • Low profile 28-pin IC socket
  • Machine tooled 28-pin IC socket
  • Zero Insertion Force (ZIF) 28-pin socket

    Resources & Downloads

    Arduino Documentary: Open Source Hardware is Here

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