Arduino UNO R3 Product Reference Manual

Product Reference Manual

SKU: A000066

ON ARDUINO UNO R3 POWER ANALOG IN CNO X

Description

The Arduino UNO R3 is the perfect board to get familiar with electronics and coding. This versatile microcontroller is equipped with the well-known ATmega328P and the ATMega 16U2 Processor. This board will give you a great first experience within the world of Arduino.

Target areas:

Maker, introduction, industries

Features

ATMega328P Processor

Memory

AVR CPU at up to 16 MHz

32KB Flash

2KB SRAM

1KB EEPROM

Security

Power On Reset (POR)

Brown Out Detection (BOD)

Peripherals

2x 8-bit Timer/Counter with a dedicated period register and compare channels

1x 16-bit Timer/Counter with a dedicated period register, input capture and compare channels

1x USART with fractional baud rate generator and start-of-frame detection

1x controller/peripheral Serial Peripheral Interface (SPI)

1x Dual mode controller/peripheral I2C

1x Analog Comparator (AC) with a scalable reference input

Watchdog Timer with separate on-chip oscillator

Six PWM channels

Interrupt and wake-up on pin change

ATMega16U2 Processor

8-bit AVR® RISC-based microcontroller

Memory

16 KB ISP Flash

512B EEPROM

512B SRAM

debugWIRE interface for on-chip debugging and programming

Power

2.7-5.5 volts

CONTENTS

1 The Board 4
1.1 Application Examples 4
1.2 Related Products 4
2 Ratings 4
2.1 Recommended Operating Conditions 4
2.2 Power Consumption 5
3 Functional Overview 5
3.1 Board Topology 5
3.2 Processor 6
3.3 Power Tree 6
4 Board Operation 7
4.1 Getting Started - IDE 7
4.2 Getting Started - Arduino Web Editor 7
4.3 Getting Started - Arduino IoT Cloud 7
4.4 Sample Sketches 7
4.5 Online Resources 7
5 Connector Pinouts 8
5.1 JANALOG 9
5.2 JDIGITAL 9
5.3 Mechanical Information 10
5.4 Board Outline & Mounting Holes 10
6 Certifications 11
6.1 Declaration of Conformity CE DoC (EU) 11
6.2 Declaration of Conformity to EU RoHS & REACH 211 01/19/2021 11
6.3 Conflict Minerals Declaration 12
7 FCC Caution 12
8 Company Information 13
9 Reference Documentation 13
10 Revision History 13

1 The Board

1.1 Application Examples

The UNO board is the flagship product of Arduino. Regardless if you are new to the world of electronics or will use the UNO as a tool for education purposes or industry-related tasks.

First entry to electronics: If this is your first project within coding and electronics, get started with our most used and documented board; Arduino UNO. It is equipped with the well-known ATmega328P processor, 14 digital input/output pins, 6 analog inputs, USB connections, ICSP header and reset button. This board includes everything you will need for a great first experience with Arduino.

Industry-standard development board: Using the Arduino UNO board in industries, there are a range of companies using the UNO board as the brain for their PLC's.

Education purposes: Although the UNO board has been with us for about ten years, it is still widely used for various education purposes and scientific projects. The board's high standard and top quality performance makes it a great resource to capture real time from sensors and to trigger complex laboratory equipment to mention a few examples.

1.2 Related Products

☑ Starter Kit

Tinkerkit Braccio Robot

Example

2 Ratings

2.1 Recommended Operating Conditions

NOTE: In extreme temperatures, EEPROM, voltage regulator, and the crystal oscillator, might not work as expected due to the extreme temperature conditions

2.2 Power Consumption

3 Functional Overview

3.1 Board Topology

Top view

X2 X1

Board topology

3.2 Processor

The Main Processor is a ATmega328P running at up to 20 MHz. Most of its pins are connected to the external headers, however some are reserved for internal communication with the USB Bridge coprocessor.

3.3 Power Tree

VIN USBVCC LD0 OPAMP +5V +261mA ATMEGA16U2-MU(R) ATMEGA328P-PU 410mA KPT-2012SGC