Arduino UNO Rev3


Arduino UNO Rev3


Scheda Arduino UNO. Basata su microcontrollore ATmega328, presenta 14 pins GPIO digitali (6 dei quali possono essere usati com output PWM), 6 input analogici, clock a 16MHz, connettore USB e power jack da 2,1mm, ICSP header, regolatori di tensione a 5V e a 3.3V. Utilizza logica a 5V ed è alimentabile con 7-12V. Ogni pin I/O  supporta fino a 40mA, il pin 3.3V arriva fino a 50mA.

Availability: 9 disponibili COD: ARD-RA000066
Quantity discounts
1-2 21,90
3-5 20,81
6+ 20,37
  • Descrizione
  • Informazioni aggiuntive


The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU mode.
Revision 3 of the board has the following new features:
  • 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Arduino Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
  • Stronger RESET circuit.
  • Atmega 16U2 replace the 8U2.
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz
Pagina del Produttore
ATmega328 datasheet
EAGLE CAD files(Eagle 6.0 and newer) 
Schematic [pdf]


Informazioni aggiuntive

Peso 0.05 kg
Dimensioni 5 × 1 × 3 cm

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