Marcel Birthelmer wrote:

>The Dallas Semi DS1306 that I've worked with includes RTC functionality
>and also has on-chip connections for a secondary power source in case of
>power failure, including charge options for a backup battery. I guess DS
>is Maxim, though, so the usual disclaimers apply.
>- Marcel
>  
>

Digikey seems to stock quite a few different versions of the DS1302, so 
I'm going to assume they are relatively easy to get.  I have a couple on 
the way.  Maybe I'll try them out.

Aaron
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