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A000010 Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 io pins, 6 analog inputs, a 16MHz crystal oscillator, a USB connection, a power jack, an ICSP header and a reset button. Uno differs from all preceding boards in that it does not use the FTDI USB to serial driver chip. Instead, it features ATmega16U2 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 both with the board that use the AVR, which operate with 5V and with the Arduino Due that operate with 3.3V.
Feature & Benefits:
An open source design
An easy USB interface
Very convenient power management and built-in voltage regulation
16MHz clock, fast enough for most applications
32KB of flash memory for storing the code
13 digital pins and 6 analog pins
An On-Board LED attached to digital pin 13 for fast an easy debugging of code
A button to reset the program on the chip
ICSP connector for bypassing the USB port and interfacing the Arduino directly as a serial device
Can be powered via the USB connection or with an external power supply
Applications: Communications & Networking
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