Daniel wrote :
> Hi all,
> I am looking for code (or PIC programming help) for a clock with
> calendar and one channel controller.
>
> I am considering using a DS1307 RTC and 16F84 PIC or similar. It will b=
e
> used outdoors, battery powered with no mains reference. The accuracy
> needs to be as accurate as possible but no more than =B1 2 minutes per
> month.

I use the X1226  It is cheap, IIC controlled and has only 1 external
component - a crystal.  The chip has on board variable timing adjustment =
via
it's internal timing CAPs.  You pick the PPM adjustment and it uses
different CAPs to adjust the time.

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