RTC chip or PIC?

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  1. - 27th July 2009, 16:12 #3
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    dhouston
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    Quote Originally Posted by flotulopex View Post
    ... why one would prefer to use an particular RTC chip ...
    I prefer the ST M41T81. In addition to macrackit's points, it survives power cycles (even recording the time power was lost), can generate a squarewave of several frequencies and battery life is >10 years. I suppose one could duplicate all that with a small PIC but there's no cost saving.
    Last edited by dhouston; - 27th July 2009 at 16:14.
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