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From: mkoswatte on 1 Feb 2010 04:25
you may use DS1302/1307 or similar chip from maxim and have a backup
battery with it.there are some rtc chips with tricle charger witch can be
used to recharge your battery
Regards
Manula

>Hello I am new to Atmel
>I am trying to make a data collecting device and send data over GPRS
>but problem is I need to integrate real time clock calender in the device
>to gather information when the data is collected?
>
>There are two options
>1.Use Atmega128 timer/clock
>2.Use separate chip with clock calender
>
>But i need to have separate battery powered system to keep the time up to
>date
>so what is the most soot-able way to keep accurate clock without any
error
>and low power consumption from above two?
>
>Please reply with at least short answer if you know any!
>Thanks!
>
>Regard
>Manula
>
>
>
>
>
>

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