UNO SMD Rev3, ATmega328, 14 Digital I/O Pins, 6 Analog Input Pins, 6 PWM Digital I/O Pins

Description

The Arduino Uno SMD 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 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.
Additional features coming with the R3 version are:
ATmega16U2 instead 8U2 as USB-to-Serial converter.
1.0 pinout: added SDA and SCL pins for TWI communication placed 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 and the second one is a not connected pin, that is reserved for future purposes.
stronger RESET circuit.
"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 Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform.

Specifications

Processor
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
Memory
Flash memory	0.032 MB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Ports & interfaces
Wi-Fi	No
Ethernet LAN	No
Number of digital I/O pins	14
Number of analog I/O pins	6
PWM digital I/O pins	6
Features
Form factor	Arduino
Certification	RoHS, FC, CE
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Power
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Weight & dimensions
Board dimensions	53.4 x 68.6 mm
Other features
Certification	RoHS, FC, CE