The Arduino Uno Rev3 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 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 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 Atmega8U2 programmed as a USB-to-serial converter."Uno" means one in Italian and is named to mark the upcoming release of Arduino 1.0.¬† ¬† The Uno and version 1.0 will be the reference versions of Arduno, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform. ¬† 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 of which 0.5 KB used by bootloader SRAM 2 KB EEPROM 1 KB Clock speed 16 MHz ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† Documents
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