Arduino Nano 3.0 (ATmega328): since the free version of Eagle does not handle more than 2 layers, and this version of the Nano is 4 layers, it is published here unrouted, so users can open and use it in the free version of Eagle. Specifications: Microcontroller: Atmel ATmega168 or ATmega328 Operating Voltage (logic level): 5V Input Voltage (recommended): 7-12 V Input Voltage (limits): 6-20 V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 8 DC Current per I/O Pin: 40 mA Flash Memory: 16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader SRAM: 1 KB (ATmega168) or 2 KB (ATmega328) EEPROM: 512 bytes (ATmega168) or 1 KB (ATmega328) Clock Speed: 16 MHz Dimensions: 0.73″ x 1.70″
