ATmega328P-PU Microcontroller with Arduino BootLoader | Compoden
ATmega328P-PU Microcontroller with Arduino BootLoader – 32KB Flash, 16MHz
The ATmega328P-PU is a high-performance, low-power 8-bit AVR microcontroller preloaded with the Arduino bootloader. It serves as the brains of countless Arduino boards and allows you to run Arduino sketches directly on a standalone chip without an external programmer. Its wide operating voltage range and ample memory make it suitable for both simple and complex embedded projects.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | ATmega328P-PU |
| Flash Memory | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB |
| Clock Speed | Up to 20 MHz (typical 16 MHz for Arduino) |
| Operating Voltage | 1.8V to 5.5V (5V recommended for 16 MHz) |
| Package | 28-pin DIP |
What You Can Build With This
- Standalone Arduino circuit on a breadboard
- Custom Arduino Uno-compatible development board
- Data logger with SD card and sensor modules
- Home automation controller with relay and Wi-Fi
Compatibility
This microcontroller is fully compatible with the Arduino IDE and libraries. It can directly replace the chip on an Arduino Uno board or be used in custom PCBs. Common pairings include 16 MHz crystal oscillators, 22pF capacitors, and USB-to-serial adapters like FTDI FT232 for programming.
Wiring Notes
For standalone operation, connect VCC (pin 7) and AVCC (pin 20) to 5V, GND (pins 8 and 22) to ground. Place a 16 MHz crystal between pins 9 and 10 with 22pF capacitors to ground. Add a 10K pull-up resistor on RESET (pin 1). Programming is done via TX (pin 3) and RX (pin 2) using a 5V USB-to-serial converter.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, it is the identical microcontroller used on the Arduino Uno. You can use it to replace a damaged chip on an Uno or build your own Uno-compatible board.
Does it come preloaded with the Arduino bootloader?
Absolutely, this ATmega328P-PU ships with the Arduino Uno bootloader already installed, so you can program it directly from the Arduino IDE via a serial connection without an external programmer.
What extra parts are needed for a standalone setup?
You'll need a 16 MHz crystal, two 22pF ceramic capacitors, a 10K ohm resistor for the RESET pull-up, and a 5V power supply. A USB-to-serial converter (like FTDI) is required for uploading sketches.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items