ATMEGA328P-PU 8-Bit AVR Microcontroller – Original DIP-28 IC

The ATMEGA328P-PU is a genuine, original 8-bit AVR microcontroller in a convenient DIP-28 (direct insertion) package. Featuring 32K Flash program memory, this versatile IC is a favourite among electronics hobbyists, makers, and engineers for building Arduino-compatible projects, embedded systems, custom PCBs, and a wide range of DIY electronics applications.

Key Features

Genuine Original IC: Authentic ATMEGA328P-PU chip — not a clone or counterfeit.
8-Bit AVR Architecture: Low-power, high-performance RISC processor running up to 20 MHz.
32K Flash Memory: Ample program storage for complex sketches and firmware.
DIP-28 Package: Direct insertion form factor — ideal for breadboards, through-hole PCBs, and IC sockets.
2KB SRAM / 1KB EEPROM: Sufficient on-chip memory for data and variables.
23 Programmable I/O Lines: Flexible GPIO for sensors, displays, motors, and more.
Arduino Compatible: The same microcontroller used on the Arduino Uno — supports the Arduino bootloader.
Wide Operating Voltage: 1.8V – 5.5V, compatible with 3.3V and 5V systems.
On-Chip Peripherals: Includes 6 PWM channels, SPI, I2C (TWI), USART, and a 6-channel 10-bit ADC.
Sold Individually: 1 piece per order.

Specifications

Model	ATMEGA328P-PU
Architecture	8-Bit AVR RISC
Flash Memory	32KB
SRAM	2KB
EEPROM	1KB
Max Clock Speed	20 MHz
Operating Voltage	1.8V – 5.5V
I/O Pins	23
Package	DIP-28
Quantity	1 piece

Perfect For

Arduino Uno replacements or standalone Arduino-compatible builds
Custom PCB and breadboard prototyping
Embedded systems and IoT projects
DIY robotics, automation, and sensor interfacing
Electronics education and learning microcontroller programming

Frequently Asked Questions

Q: What is the ATMEGA328P-PU microcontroller used for?

A: The ATMEGA328P-PU is an 8-bit AVR microcontroller widely used in Arduino Uno boards and standalone embedded projects. It supports a broad range of applications including sensor interfacing, motor control, data logging, robotics, IoT prototyping, and general-purpose digital electronics projects.

Q: Is this the same chip used in the Arduino Uno?

A: Yes — the ATMEGA328P-PU in DIP-28 package is the exact microcontroller used on the original Arduino Uno. It can be pre-loaded with the Arduino bootloader and programmed using the Arduino IDE, making it a seamless replacement or the core of a custom Arduino-compatible circuit.

Q: What does DIP-28 mean and is it breadboard-compatible?

A: DIP stands for Dual In-line Package, with 28 pins arranged in two parallel rows. This through-hole format is fully breadboard-compatible and easy to insert into standard 0.1"-pitch PCB sockets, making it ideal for prototyping and hands-on electronics projects without soldering.

Q: How much program memory does the ATMEGA328P-PU have?

A: The ATMEGA328P-PU features 32KB of Flash program memory, 2KB of SRAM for runtime data, and 1KB of EEPROM for non-volatile data storage — giving you plenty of space for most hobbyist and professional embedded firmware projects.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.