Arduino R3 Datasheet: Comprehensive Overview and Specifications

Author : chen judy | Published On : 19 Mar 2024

As of my last update in January 2022, I can provide you with a comprehensive overview of the Arduino Uno R3 board along with its specifications. The Arduino Uno R3 is one of the most widely used microcontroller boards in the Arduino family, known for its simplicity and versatility. Below, I'll outline its key features, specifications, and functionalities:

Overview:
The Arduino Uno R3 is an open-source electronics platform based on the ATmega328P microcontroller. It features digital and analog input/output pins that can be used to interface with various sensors, actuators, and other electronic components. The board is designed to be easy to use, making it suitable for both beginners and advanced users in the field of electronics and programming.

Key Features:
Microcontroller: ATmega328P
Operating Voltage: 5V
Input Voltage: 7-12V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 6
Flash Memory: 32 KB (ATmega328P)—0.5 KB used by bootloader
SRAM: 2 KB (ATmega328P)
EEPROM: 1 KB (ATmega328P)
Clock Speed: 16 MHz
USB Interface: ATmega16U2 (used for serial communication and programming)
Power Supply: Can be powered via USB connection or an external power supply connected to the DC jack
Pinout:
The pinout of the Arduino Uno R3 board is as follows:
Specifications:
Digital I/O Pins: These pins can be configured as inputs or outputs. They operate at 5V logic levels.
Analog Input Pins: The Arduino Uno R3 has 6 analog input pins, labeled A0 through A5, which can read analog voltages between 0 and 5 volts.
PWM Output: 6 of the digital pins (marked with "~") can produce PWM (Pulse Width Modulation) signals for controlling analog circuits.
Serial Communication: The board has a USB interface (ATmega16U2) for serial communication with a computer, enabling programming and data exchange.
Programming: The Arduino Uno R3 can be programmed using the Arduino IDE (Integrated Development Environment), which simplifies the process of writing and uploading code to the board.
Power Supply: The board can be powered via a USB connection or an external power supply connected to the DC jack. It can also be powered using a 5V regulated power source connected to the 5V pin.
Additional Features:
Reset Button: Allows you to reset the microcontroller.
LEDs: The board has built-in LEDs for power indication (PWR), pin 13 (L), and serial communication (TX and RX).
Resources:
Arduino Uno R3 Official Page
Arduino Uno R3 Schematic
Conclusion:
The Arduino Uno R3 is a versatile and user-friendly microcontroller board suitable for a wide range of electronics projects, from simple blinking LED experiments to complex IoT applications. Its extensive community support, abundant learning resources, and compatibility with various shields and modules make it an excellent choice for both beginners and experienced makers.

If you want to know more about it, please click on the link below.

https://www.elec28.com/arduino-r3-datasheet-comprehensive-overview-and-specifications/