Technical Documents

Datasheet (A000066) Full Pinout Diagram Arduino Uno Rev3 Schematic

EMX-00001-A

Name: Arduino Uno
Brand: Generic
SKU: EMX-00001-A
Availability: InStock

(Last updated) May 27, 2026

Arduino Uno

Arduino Uno board

Description

The Arduino Uno R3 is a microcontroller development board based on the ATmega328P, designed for building interactive electronic projects. It features 14 digital I/O pins, 6 analog inputs, a 16 MHz clock, USB connectivity, and operates at 5 V. Compatible with the Arduino IDE and a wide range of shields, it is widely used in education, prototyping, and embedded system development.

Manufacturer Details

Manufacturer	Part Number
Arduino	A000066
Elegoo	EL-UNO-R3
HiLetgo	HL-UNO-328
Keyestudio	Keyestudio

Vendor Suppliers

Amazon ( india ) Amazon ( Japan ) Amazon ( USA ) Amazon ( canada ) Robu.in ( India ) FlyRobo ( India )

Application Resources

Arduino Uno Beginner Tutorial

Technical Specifications

Board Type	Uno
With Cable	Yes
Operating Voltage	5 V
Input Voltage Range	6 – 20 V
Analog I/O Pins	6
Digital I/O Pins	14 (6 × PWM)
DC Current per I/O Pin	40 mA
Clock Speed	16 MHz
SRAM	2 KB
EEPROM	1 KB
Flash Memory	32 KB
Dimensions (L × W × H)	75 × 54 × 12 mm
Weight	28 g (without cable), 54 g (with cable)