The Arduino Uno Board A000066 R3 is a microcontroller board based on the ATmega328.

It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, 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 an AC-to-DC adaptor 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 programmed as a USB-to-serial converter.

• Microcontroller ATmega328
• Operating voltage 5V
• Input voltage range nom. 7-12V
• Maximum supply voltage 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 of which 0.5 KB is used by bootloader
• SRAM 2 KB
• EEPROM 1 KB
• Clock speed 16 MHz
• USB Connector type B Male