The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.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.
Source: Arduino Official
| MICROCONTROLLER | ATmega328 |
|---|---|
| ARCHITECTURE | AVR |
| OPERATING VOLTAGE | 5 V |
| INPUT VOLTAGE | 7-12 V |
| DC CURRENT PER I/O PINS | 40 mA (I/O Pins) |
| POWER CONSUMPTION | 19 mA |
| ANALOG IN PINS | 8 (Pins: A0~A7) |
| DIGITAL I/O PINS | 14 (Pins: TX, RX, D2 ~ D13. And 6 of which are PWM) |
| PWM OUTPUT | 6 (Pins: D3, D5, D6, D9, D10, D11) |
| CLOCK SPEED | 16 MHz |
| FLASH MEMORY | 32 KB of which 2 KB used by bootloader |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| PCB SIZE | 18 x 45 mm |
| WEIGHT | 7 g |