Em 24/8/2012 16:27, KPL escreveu:
> Hi once again
>
> In another discussions a question got born, which nobody had exact answer=
 for.
> Looks like even on modern motherboards RTC clocks still are using same
> 32768Hz resonators, which are usually quite big. What is the reason
> not to use higher frequencies which are used everywhere else? Do those
> slower resonators have any advantage?


The reason is current consumption. The lithium batteries store around
240mAh and the RTC must run months to years without replacing batteries.


Isaac

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