ATMEGA328P-PU 8-bit Microcontroller by Bridgold DIP-28 4/8/16/32 KB

Description

Product Overview

The ATMEGA328P-PU is an 8‑bit microcontroller that combines a proven RISC core with a versatile memory architecture. Bridgold supplies the device in a standard DIP‑28 package, allowing easy insertion into breadboards, development kits, or production PCBs. Memory capacity can be selected from 4 KB, 8 KB, 16 KB, or 32 KB of in‑system programmable flash, giving designers the freedom to match storage to the complexity of their application while keeping cost and power consumption low.

Key internal components include a programmable watchdog timer with a dedicated on‑chip oscillator, multiple interrupt sources, and pin‑change wake‑up capability. These features enable precise timing control, robust error recovery, and low‑power sleep modes that extend battery life in remote or portable devices. The device operates across a wide voltage range, supporting 1.8 V to 5.5 V, which makes it compatible with both modern low‑voltage logic and legacy 5 V systems.

Physical dimensions measure approximately 3 × 2 × 0.6 inches and weigh only 1.7 ounces, ensuring that the component fits comfortably within tight enclosure constraints. The package is RoHS‑compliant and has been tested for reliability under standard industrial conditions, providing confidence for long‑term deployments in automation, sensor networks, and consumer electronics.

Usage

Designed for both hobbyists and professional engineers, the ATMEGA328P-PU excels in a variety of environments. In maker projects, it powers Arduino‑compatible boards, robotics controllers, and DIY IoT devices, offering enough processing headroom to handle sensor fusion, motor control, and communication protocols such as UART, SPI, and I²C. Its low power consumption and sleep modes make it suitable for battery‑operated wearables, environmental monitors, and remote data loggers.

In industrial settings, the microcontroller is frequently used in embedded control modules for factory automation, smart lighting, and HVAC systems. The robust watchdog timer and interrupt‑on‑pin‑change functionality provide deterministic response times required for safety‑critical applications. Engineers can program the device directly on the board using standard ISP tools, reducing time‑to‑market and simplifying firmware updates in the field.

Because the ATMEGA328P-PU supports a wide voltage range, it can be integrated into mixed‑signal designs that combine analog front‑ends, power management ICs, and other digital peripherals. Its pin layout offers ample general‑purpose I/O, PWM outputs, and analog‑to‑digital conversion channels, enabling seamless interaction with sensors, actuators, and communication modules.

Why Choose Us

Bridgold has a long history of delivering high‑quality semiconductor components, and the ATMEGA328P-PU is no exception. Each unit undergoes rigorous testing for functional correctness, thermal stability, and electrical performance before it leaves the factory. Our supply chain guarantees consistent availability, so you can rely on a steady inventory for both prototype runs and high‑volume production.

We stand behind the durability of our microcontrollers with a comprehensive warranty that covers manufacturing defects. While we do not provide direct technical support, detailed datasheets, application notes, and reference designs are freely available on our website, empowering engineers to get up to speed quickly and troubleshoot independently.

Our commitment to environmental responsibility means the ATMEGA328P-PU is manufactured using lead‑free processes and complies with the latest RoHS directives. This helps you meet regulatory requirements for electronic products sold in Europe, North America, and many other regions.

Choosing Bridgold also gives you access to a community of developers who share code libraries, example projects, and best‑practice guidelines. This collaborative ecosystem reduces development risk and accelerates innovation across a broad range of applications.

Key Features

• Flexible flash memory options (4‑32 KB) let you scale storage to match project needs.
• Integrated watchdog timer with separate oscillator ensures reliable recovery from software faults.
• Interrupt‑on‑pin‑change capability provides fast response for real‑time sensor inputs.
• Wide operating voltage (1.8‑5.5 V) enables compatibility with both low‑power and legacy circuits.
• Comprehensive warranty and extensive documentation give you confidence and self‑service support.

FAQ

What programming interfaces are supported?

The ATMEGA328P-PU supports In‑System Programming (ISP) via a standard 6‑pin SPI interface, allowing you to program the flash memory directly on the target board without removal.

Can the device operate at low voltage levels?

Yes, the microcontroller functions from 1.8 V up to 5.5 V, making it suitable for battery‑powered designs as well as traditional 5 V logic environments.

Is the watchdog timer configurable?

The watchdog timer can be programmed to generate time‑outs ranging from a few milliseconds to several seconds, and it runs from an independent on‑chip oscillator for reliable operation even when the main clock is stopped.

How many I/O pins are available?

The DIP‑28 package provides 23 general‑purpose I/O pins, many of which can be multiplexed for PWM, ADC, UART, SPI, and I²C functions, giving you great flexibility in circuit design.

What is the recommended temperature range for operation?

Bridgold specifies an operating temperature range of –40 °C to +85 °C, covering most industrial and consumer environments while maintaining performance and stability.