The Arduino Duemilanove ("2009") is a microcontroller board based on the ATmega168 (datasheet) or ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
"Duemilanove" means 2009 in Italian and is named after the year of its release. The Duemilanove is the latest in a series of USB Arduino boards; for a comparison with previous versions, see the index of Arduino boards.
Features:
| • Microcontroller | ATmega168 |
| • 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 2 KB used by bootloader |
| • SRAM | 2 KB (ATmega328) |
| • EEPROM | 1 KB (ATmega328) |
• Clock Speed
| 16 MHz |
