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The Arduino Uno Rev3 is a microcontroller board based on the ATmega328P. It is equipped with 14 digital I/O pins, 6 analog inputs, a 16 MHz clock, and operates at 5V, making it the standard, beginner-friendly board for electronics and coding projects.Core Specifications
| Feature | Specification |
|---|---|
| Microcontroller | ATmega328P (8-bit AVR) |
| Operating Voltage | 5V |
| Input Voltage | Recommended: 712V Limits: 620V |
| Clock Speed | 16 MHz |
| Flash Memory | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
I/O & Connectivity
| Pin Type | Count & Details |
|---|---|
| Digital I/O Pins | 14 total |
| PWM Pins | 6 (Digital pins 3, 5, 6, 9, 10, 11) |
| Analog Input Pins | 6 total (multiplexed) |
| DC Current per I/O | 20 mA |
| DC Current for 3.3V | 50 mA |
| Communication | 1x UART (Hardware Serial), 1x SPI, 1x I2C |
Physical Properties
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