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Atmega 128 fuse bits setting

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A.Rashad

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How do i program the fuse bits of atmega 128 for external crystal operation ? what values should i put for low and high fuse bits? how should i avoid locking of chip?
 

skogsjanne

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Search atmel.com for application notes. There is plenty of information there.
 

alexan_e

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see page of the 38 manual
https://www.google.gr/url?sa=t&rct=...sg=AFQjCNF1FyKLlDP9rQorROi3E9F6yP2BUA&cad=rja

You should program CKOPT (set to 0)
Leave unprogrammed CKSEL3,2,1,0 (set to 1)

The SUT1,0 should be set to 01 or 10 or 11 (0=programmed, 1=unprogrammed) , default is 10

An easier solution would be to use Burn-O-Mat , I use the downloaded version with avrdude and USBasp
https://avr8-burn-o-mat.aaabbb.de/avr8_burn_o_mat_avrdude_gui_en.html

If you are using another application double check if the meaning of checked checkboxes is programmed or unprogrammed

Alex

---------- Post added at 10:08 ---------- Previous post was at 10:05 ----------

Search atmel.com for application notes. There is plenty of information there.

You could at least provide a link to a datasheet or a tutorial, I don't get this "find it yourself" kind of answer.
 

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