alan.b.pearce@stfc.ac.uk wrote 2012-02-16 11:23:
>>> Have you considered simply using a seperate RTC chip to track the
>>> time?
>>
>> There are several accurate low-power I2C/SPI RTC ICs
>>
>> eg http://www.maxim-ic.com/products/timers/ds3234.cfm
>>
>
> I believe Microchip has one now too.
>
>

Probably:

http://www.microchip.com/pagehandler/en-us/technology/realtimeclock/home.ht=
ml
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.