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Product: SunFounder R3 Board for Arduino ATMEGA328P ATMEGA16U2 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 SunFounder R3