On Sat, 12 Jul 2003 10:32:07 +1200, you wrote:

>> For how long if I only try to mantain the time ?
>
>Assuming a 32768 crystal, every Hz error in the crystal frequency
>is going to result in about 3 seconds/day error. You should at least
>use a trimmer cap for adjustment

...Or use a software clibration trim

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