Arduino Uno Board

The Arduino Uno 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 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.

Specifications

• 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 boot-loader
• SRAM : 2 KB (ATmega328)
• EEPROM : 1 KB (ATmega328)
• Clock Speed : 16 MHz