The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x) or ATmega168 (Arduino Nano 2.x). It has more or less the same functionality as the Arduino Duemilanove but in a different package. It lacks only a DC power jack and works with a Mini-B USB cable instead of a standard one.
Specification:
| Microcontroller | Â ATmega328 |
| Flash Memory | 32 KB (ATmega328) of which 2 KB used by bootloader |
| SRAM | 1 KB or 2KB |
| EEPROM | Â 512 bytes (ATmega168) or 1 KB (ATmega328) |
| Clock Speed | 16 MHz |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Input Pins | 8 |
| DC Current per I/O Pin | 40 mA |
| Operating Voltage | 5V |
| Input Voltage | 7 – 12 V (5V model) |
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