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Arduino UNO bootloader Atmega 328P-PU
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$6.18
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This ATmega328P-PU microcontroller comes in a 28-pin DIP package with the Arduino Uno Optiboot bootloader pre-loaded. Drop it into a breadboard or custom PCB...
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This ATmega328P-PU microcontroller comes in a 28-pin DIP package with the Arduino Uno Optiboot bootloader pre-loaded. Drop it into a breadboard or custom PCB and program it directly from the Arduino IDE — no Arduino board required.
To get started, you'll need an external 16 MHz crystal or resonator, a 5 V supply, and a serial connection (e.g. an FTDI adapter).
Key Features
- Pre-loaded Bootloader – Optiboot (Arduino Uno) ready to go
- 28-Pin DIP Package – Breadboard and socket friendly
- 32 KB Flash – Program memory for your sketches
- 23 I/O Lines – Including 6 channels of 10-bit ADC
- Wide Voltage Range – 1.8–5 V operating voltage
- Up to 20 MHz – With external crystal
- In-Circuit Programmable – ISP header support
Specifications
- Chip: ATmega328P-PU
- Architecture: 8-bit AVR
- Package: 28-pin DIP
- Flash Memory: 32 KB
- Operating Temperature: −40 to +85 °C
Ideal For
- Custom embedded projects using Arduino code
- Permanent installations where a full Arduino board is unnecessary
- Breadboard prototyping and learning AVR architecture
Package Contents
- 1× ATmega328P-PU with Arduino Uno bootloader
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- ATmega328P
- An 8-bit microcontroller chip used on many Arduino Uno-compatible boards. Knowing the controller uses an ATmega328P helps you understand its memory, speed, pin compatibility, and the Arduino sketches it can run.
- AVR
- AVR is a family of 8-bit microcontrollers used in many classic Arduino-style boards. If a USB host library mentions AVR support, it suggests the examples or compatibility may be aimed at those older microcontroller boards.
- Bootloader
- Small starter software on a microcontroller that lets new code be uploaded before the main program runs. Knowing how to enter bootloader mode matters when you need to program the board or recover it after a faulty sketch.
- Flash memory
- Non-volatile memory that keeps stored data even when power is removed. In this sensor, it matters because enrolled fingerprint templates can remain saved after the project is turned off.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
- ISP
- An image signal processor is hardware that helps process raw camera data into usable images or video. It matters for vision projects because it can improve camera handling and reduce the processing load on the main CPU.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
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