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ATmega 8/16/32 ATtiny13 и примеры fuse (factory default or others)

Опубликовано: 6 января 2015

Source:  Electronics

AVR fuse bits settings

Posted by Omkar on April 3, 2010

Setting AVR fuse bits correctly is most important and equally confusing part for many beginners. In this post I have presented some of the ready to use fuse bit settings and corresponding batch files, which can be used with AVRdude.

Link for downloading avrdude batch files (to be used with USBasp) is given at the end of this post.

 

Microcontroller

H
fuse

L
fuse

Description
ATmega328 0xD9 0x62 Factory Default Settings for ATmega328P
ATmega328 0xD9 0xE2 Settings for ATmega328P, serial program Enabled,
Int RC 8 mHz
ATmega16/32 0x99 0xE1 Factory Default Settings for ATmega16/32.

 

H fuse:
JTAG            : Enabled
OCD             : Disabled
SPI Programming : Enabled
CKOPT           : Unprogrammed
EEPROM Preserve : Unprogrammed (EEPROM not preserved)
BOOT size       : 1024 words
Reset Vector    : User flash code

L fuse:
Brown-out level : 2.7V
Brown-out detect: Disabled
Startup timing  : Default
Clock Source    : Internal, 1MHz

ATmega16/32 0xD9 0xFF External Crystal upto 16MHz, JTAG disabled. Rest of the options : Default.
ATmega 8/16/32 0xD9 0xE4 Internal 8MHz oscillator, JTAG disabled. Rest of the options : Default. Note: ATmega8 not included JTAG.
ATmega8 0xD9 0xE1 Factory Default Settings for ATmega8.

 

H fuse:
Reset Disabled  : Unprogrammed (Reset pin is enabled)
Watchdog        : Off
SPI Programming : Enabled
CKOPT           : Unprogrammed
EEPROM Preserve : Unprogrammed (EEPROM not preserved)
BOOT size       : 1024 words
Reset Vector    : User flash code

L fuse:
Brown-out level : 2.7V
Brown-out detect: Disabled
Startup timing  : Default
Clock Source    : Internal, 1MHz

ATmega8 0xD9 0xEF External Crystal upto 16MHz. Rest of the options : Default.
ATtiny13 0xFF 0x6A Factory Default Settings for ATtiny13.

 

H fuse:
Self programming: Disabled
debugWire       : Disabled
Brown-out detect: Disabled
Reset Disabled  : Unprogrammed (Reset pin is enabled)

L fuse:
SPI Programming : Enabled
EEPROM Preserve : Unprogrammed (EEPROM not preserved)
Watchdog        : Off
Clock div by 8  : Enabled
Startup timing  : Default
Clock Source    : Internal, 9.6MHz

ATtiny13 0xFF 0x69 Internal 4.8MHz oscillator, Divide clock by 8. Rest of the options : Default
ATtiny13 0xFF 0x79 Internal 9.6MHz oscillator, clock is not divided by 8. Rest of the options : Default.

Дополнение:

Read default AVR ATMEGA8-16PU

 

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