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Message

Re: STK-500 schematic

2006-02-28 by brewski922

After thoughts
If you are wanting to preserve something like the last reading using 
a SAVE pushbutton. Thats doing it, the pain-in-the-ass, manually way.

You could use a sensor that senses immediatelly when then input 
voltage fails and triggers a interrupt routine. Have a capacitor 
store enough power to run the micro for a few seconds while the loss-
of-power routine makes the saves. If you wanted you could still have 
the SAVE SW.

Mike

--- In AVR-Chat@yahoogroups.com, josef mikle <josef_mikle@...> wrote:
>
> Hi John
>   does rR0 to R31 change after reset?
>   how can I save some few data (8 byte) in ram that after Reset I 
can recover them?
>   I will be appreciate if you send your reply on 
hosseingholizade@... add.
>   Bye
> 
> John Samperi <samperi@...> wrote:
>   At 10:25 PM 22/02/2006, you wrote:
> >If you look at this circuit, it is a block schematic, referring to 
Sheets
> >1, 2 etc up to SHEET-9 SCH
> 
> There is only 1 PDF file. All pages are there just scroll down
> to the page you want like others have suggested.
> 
> Regards
> 
> John Samperi
> 
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