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Lpc2000

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Re: RTC Losing ~5 seconds per day

2006-02-10 by Guillermo Prandi

That's about 60 ppm (or worse). Have you checked your crystal's specs?

You might want to try another crystal. Citizen's CM200S32.768KDZFT 
($.88 at Digikey) is 20 ppm.

Guille

--- In lpc2000@yahoogroups.com, Sean <embeddedrelated@...> wrote:
>
> Hi All,
> 
> I've got an LPC2148 set up and the RTC is losing about 5 seconds 
per day, I 
> am assuming that my 32.768kHz crystal isn't exact.
> 
> Are there any good ways to correct this?  I know this isn't major, 
but 
> that's 2 minutes a month, a little outside of what I'd like to see.
> 
> Thanks,
> 
> -- Sean
>

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