Tuesday Oct 21
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17/11
Arduino Default Fuse Settings
Last Updated on Wednesday, 4 January 2012 11:06
Written by Cody Snider
Sunday, 17 April 2011 08:50

Here are the default fuse settings for each Arduino from the boards.txt included with the Arduino development software.

To understand more about the fuse settings for your microcontroller, visit Engbedded’s AVR Fuse Calculator.

To write fuse settings, you will need a programmer with this capability. I use Mighty Ohm’s high-voltage rescue shield available here.

Arduino Uno

Low Fuse 0xFF
High Fuse 0xDE
Extended Fuse 0×05

Arduino Duemilanove or Nano w/ ATmega328

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0×05

Arduino Diecimila, Duemilanove, or Nano w/ ATmega168

Low Fuse 0xFF
High Fuse 0xDD
Extended Fuse 0×00

Arduino Mega 2560

Low Fuse 0xFF
High Fuse 0xD8
Extended Fuse 0xFD

Arduino Mega (ATmega1280)

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0xF5

Arduino Mini

Low Fuse 0xFF
High Fuse 0xDD
Extended Fuse 0×00

Arduino Fio

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0×05

Arduino BT w/ ATmega328

Low Fuse 0xFF
High Fuse 0xD8
Extended Fuse 0×05

Arduino BT w/ ATmega168

Low Fuse 0xFF
High Fuse 0xDD
Extended Fuse 0×00

LilyPad Arduino w/ ATmega328

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0×05

LilyPad Arduino w/ ATmega168

Low Fuse 0xE2
High Fuse 0xDD
Extended Fuse 0×00

Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega328

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0×05

Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega168

Low Fuse 0xFF
High Fuse 0xDD
Extended Fuse 0×00

Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega328

Low Fuse 0xFF
High Fuse 0xDA
Extended Fuse 0×05

Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega168

Low Fuse 0xC6
High Fuse 0xDD
Extended Fuse 0×00

Arduino NG or older w/ ATmega168

Low Fuse 0xFF
High Fuse 0xDD
Extended Fuse 0×00

Arduino NG or older w/ ATmega8

Low Fuse 0xDF
High Fuse 0xCA


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