UNO Expansion Board ATmega328P Nano V3 Improved Version Description: The UNO Expansion Board is designed specifically for the NANO. It comes with two rows of pins suitable for use with the Duemilanove 2009 and UNO R1. The improved Nano V3 version features the ATmega328P microcontroller. Specifications: Microcontroller: ATmega328 Operating Voltage (logic level): 5V Recommended Input Voltage: 7V - 12V Input Voltage Limits: 6V - 20V Digital I/O Pins: 14 (6 provide PWM output) Analog Input Pins: 8 DC Current per I/O Pin: 40mA Flash Memory: 32KB (2 KB used by bootloader) SRAM: 2KB EEPROM: 1KB Clock Speed: 16MHz Note: This version does not include a USB cable. It features an improved USB chip for enhanced download speed and stability on Windows 7 and 8 systems. Package Includes: 1 x 328P Multifunction Expansion Board V3.0 1 x Compatible Improved Version Nano V3.0