← All parts
Arduino Uno R3
ArduinoATmega328P
The Arduino Uno R3 is a versatile development board featuring an ATmega328P microcontroller, ideal for beginners in electronics and coding. It offers 14 digital I/O pins, 6 analog inputs, and USB connectivity.
In stock
Specifications
15- Operating Voltage
- 5 V
- Input Voltage Vin
- 6-20 V
- Logic Level
- 5 V
- Clock Speed
- 16 MHz
- Flash Memory
- 32 kB
- Sram
- 2 kB
- Eeprom
- 1 kB
- Gpio Count
- 20
- Pwm Channels
- 6
- Adc Channels
- 6
- Uart Interfaces
- 1
- Spi Interfaces
- 1
- I2c Interfaces
- 1
- Usb
- USB-B
- Operating Temperature
- -40 to 85 °C
Pinout
31| Pin | Name | Functions | Notes |
|---|---|---|---|
| 2 | IOREF | POWER | Reference for digital logic V - connected to 5V |
| 3 | Reset | GPIO | |
| 4 | +3V3 | POWER | |
| 5 | +5V | POWER | |
| 6 | GND | GND | |
| 7 | GND | GND | |
| 8 | VIN | POWER | |
| 9 | A0 | ADCGPIO | |
| 10 | A1 | ADCGPIO | |
| 11 | A2 | ADCGPIO | |
| 12 | A3 | ADCGPIO | |
| 13 | A4/SDA | ADCI2CGPIO | |
| 14 | A5/SCL | ADCI2CGPIO | |
| 1 | D0 | GPIOUART | |
| 2 | D1 | GPIOUART | |
| 3 | D2 | GPIO | |
| 4 | D3 | GPIOPWM | |
| 5 | D4 | GPIO | |
| 6 | D5 | GPIOPWM | |
| 7 | D6 | GPIOPWM | |
| 8 | D7 | GPIO | |
| 9 | D8 | GPIO | |
| 10 | D9 | GPIOPWM | |
| 11 | SS | GPIOSPIPWM | |
| 12 | MOSI | GPIOSPIPWM | |
| 13 | MISO | GPIOSPI | |
| 14 | SCK | GPIOSPI | |
| 15 | GND | GND | |
| 16 | AREF | POWER | Analog reference voltage |
| 17 | A4/SD4 | ADCI2CGPIO | Duplicated from JANALOG header |
| 18 | A5/SD5 | ADCI2CGPIO | Duplicated from JANALOG header |
Interactive pinout
Highlight:
ATmega328P
Click a pin to copy its name · tap a tag above to spotlight a bus.