Product: SunFounder R3 Board for Arduino ATMEGA328P ATMEGA16U2
Brand: SunFounder
Color: R3
Technical Details: 
 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 bootloader 
 SRAM: 2 KB (ATmega328) 
 EEPROM: 1 KB (ATmega328) 
 Clock Speed: 16 MHz 
 
 Package included: 
 1x SunFounder R3 (compatible for Arduino )

For more information, please view at
http://wiki.sunfounder.cc/index.php?title=Main_Page
R3 board compatible with Arduino
The board for Arduino use ATMEGA16U2 chip, Faster transfer rates and more memory
Control using r3 ATmega328P chip
Includes new pin configuration (SCL, SDA, IOREF)
Clearly print on the female header connector, more precise and easier to use the wire

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