???<strong>Arduino Compatible SMD UNO R3 AVRmega328P-PU Development Board Controller With USB Cable</strong><br /><br /><strong>Feature:</strong><br /><br />Using ATmega16U2 instead 8U2 as USB-to-Serial converter， but does not mean its 16K Flash would make your R3 more faster， it is just serving for USB port<br />Added SDA and SCL pins for TWI communication placed near to the AREF， but just the copy of PIN4 and PIN5<br />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， the second one is a not connected pin which is reserved for future purposes<br />Stronger RESET circuit， more stable， more convenience<br /><br /><strong>Specification:</strong><br /><br />Arduino Compatible UNO R3 SMD Version<br />Microcontroller: ATmega328<br />Operating Voltage: 5V<br />Input Voltage (recommended): 7V ~ 12V<br />Input Voltage (limits): 6V ~ 20V<br />Digital I/O Pins: 14 (of which 6 provide PWM output)<br />Analog Input Pins: 6<br />DC Current per I/O Pin: 40mA<br />DC Current for 3.3V Pin: 50mA<br />Flash Memory: 32KB (of which 0.5KB used by bootloader)<br />SRAM: 2KB<br />EEPROM: 1KB<br />Clock Speed: 16MHz<br /><br /><strong>Package included:</strong><br /><br />1 x ATmega16U2 Arduino Compatible SMD UNO R3<br />1 x USB Cable<br /><br /><img alt="Arduino Compatible SMD UNO R3 AVRmega328P-PU Development Board Controller With USB Cable" src="http://img.banggood.com/images/upload/2014/06/SKU141102/11.jpg" /><br /><br /><img alt="Arduino Compatible SMD UNO R3 AVRmega328P-PU Development Board Controller With USB Cable" src="http://img.banggood.com/images/upload/2014/06/SKU141102/12.jpg" /><br /><br /><img alt="Arduino Compatible SMD UNO R3 AVRmega328P-PU Development Board Controller With USB Cable" src="http://img.banggood.com/images/upload/2014/06/SKU141102/13.jpg" />