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Arduino UNO R3 User Manual

Arduino UNO R3
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Arduino® UNO R3
4 / 13 Arduino® UNO R3 / Rev. 01 - 25/11/2021
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
Symbol Description Min Max
Conservative thermal limits for the whole board: -40 °C (-40°F) 85 °C ( 185°F)
NOTE: In extreme temperatures, EEPROM, voltage regulator, and the crystal oscillator, might not
work as expected due to the extreme temperature conditions

Questions and Answers:

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Arduino UNO R3 Specifications

General IconGeneral
MicrocontrollerATmega328P
Operating Voltage5V
Input Voltage (recommended)7-12V
Input Voltage (limit)6-20V
Digital I/O Pins14 (of which 6 provide PWM output)
PWM Digital I/O Pins6
Analog Input Pins6
DC Current per I/O Pin20 mA
DC Current for 3.3V Pin50 mA
Flash Memory32 KB (ATmega328P) of which 0.5 KB used by bootloader
SRAM2 KB (ATmega328P)
EEPROM1 KB (ATmega328P)
Clock Speed16 MHz
LED_BUILTIN13
Length68.6 mm
Width53.4 mm
Weight25 g

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