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CKOPT (was Re: [avr-chat] avrdude-ATMega32 fuse bits issues)
From: |
Graham Davies |
Subject: |
CKOPT (was Re: [avr-chat] avrdude-ATMega32 fuse bits issues) |
Date: |
Wed, 21 Dec 2005 19:33:16 -0500 |
Richard Urwin wrote:
> I found the datasheets ambiguous when I built for the
> ATMega16. It says CKOPT should be programmed
> for fast resonators, but it does not mention crystals.
Underneath the paragraph about resonators there is a table, Table 4. in my
copy of the data sheet. This table tells you how to set CKSEL3..1 for
various frequency ranges. It also gives a binary value for CKOPT. From
this and knowing that 1 is unprogrammed and 0 1s programmed you can figure
out that CKOPT should be programmed for frequencies above 8MHz, just as
Brian says. I would have presented it differently, but the information is
there.
Graham.
- [avr-chat] avrdude-ATMega32 fuse bits issues, Chris Pontiga, 2005/12/18
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Brian Dean, 2005/12/20
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Chris Pontiga, 2005/12/20
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Graham Davies, 2005/12/21
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Brian Dean, 2005/12/21
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Graham Davies, 2005/12/21
- Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Richard Urwin, 2005/12/21
- CKOPT (was Re: [avr-chat] avrdude-ATMega32 fuse bits issues),
Graham Davies <=
- Re: CKOPT (was Re: [avr-chat] avrdude-ATMega32 fuse bits issues), Richard Urwin, 2005/12/22
- Re: CKOPT (was Re: [avr-chat] avrdude-ATMega32 fuse bits issues), Daniel O'Connor, 2005/12/22
Re: [avr-chat] avrdude-ATMega32 fuse bits issues, Neil Davey, 2005/12/21