Board

Arduino Diecimila specs & datasheets

Microcontroller board · Arduino · Released 2007

The 2007 Arduino whose name means “ten thousand” in Italian, marking the boards sold: an ATmega168 with an FTDI USB chip and auto-reset.

Photo: Harvie, Public domain, via Wikimedia Commons

Chip / SoC: Microchip (Atmel) ATmega168
CPU: 8-bit AVR
Clock: 16 MHz
RAM: 1 KB SRAM
Flash: 16 KB (2 KB used by the bootloader)
I/O voltage: 5 V
Released: 2007
Status: Retired

Draft entry: these specs were compiled from the linked sources and are waiting for a second check. Spotted a mistake? Use the form at the end of the page.

Specifications

12 specs

Chip / SoC: Microchip (Atmel) ATmega168^[1]
CPU: 8-bit AVR^[2]
Clock: 16 MHz^[1]
RAM: 1 KB SRAM^[2]
Flash: 16 KB (2 KB used by the bootloader)^[1]
EEPROM: 512 bytes^[2]
GPIO: 14 digital I/O (6 PWM)^[1]
Analog: 6 analog inputs (10-bit)^[1]
I/O voltage: 5 V^[1]
Input voltage: 7–12 V recommended via barrel jack, or 5 V via USB^[1]
USB: USB-B via FTDI FT232RL^[1]
Upload limits: 14 KB flash, 1 KB RAM^[4]

Upload limits are what a sketch or firmware may use after the bootloader, as the build tools enforce them, not the chip’s full memory.

Can I still use it?

1 platforms

Arduino framework: Supported^[1]Supported by the AVR core as “Arduino Duemilanove or Diecimila”.

As published by each project, checked weekly. A platform not listed has no published information here, which is not the same as no support.

Datasheets and documents

2 documents

Arduino Diecimila (retired), Arduino documentationProduct page
Arduino Diecimila product pageProduct page

Gotchas

2 known issues

Manual power jumper. Unlike later boards, the Diecimila selects USB or external power with a jumper, not automatically.^[3]
5 V logic. I/O is 5 V. Sensors and modules that run at 3.3 V (most modern ones) need level shifting on their inputs.^[1]

What changed

From the specs

Next came the Arduino Duemilanove

Spec	Arduino Diecimila	Arduino Duemilanove
Chip / SoC	Microchip (Atmel) ATmega168	Microchip (Atmel) ATmega328 (early boards: ATmega168)
RAM	1 KB SRAM	2 KB SRAM (1 KB on ATmega168 boards)
Flash	16 KB (2 KB used by the bootloader)	32 KB (2 KB used by the bootloader)
EEPROM	512 bytes	1 KB

History and use today

Editorial

History

The Diecimila was the first Arduino with an auto-reset circuit, so sketches uploaded without pressing the reset button, which set the workflow every later Arduino followed.^[3]

Still useful for

A collector's board now; any Uno-compatible board runs the same sketches with twice the memory.

Sources

4 sources

Spotted a mistake?

Reviewed by hand

Every report is read by a person and checked against a source before anything changes. Please link one if you have it.

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