Woods Larry D wrote:
>
> I want to design a PIC-based application that will be battery powered where
> either 1) the initiation of the application will be triggered by the chip
> being powered on; i.e., the chip will normally not be under power, or 2) I
> will run at a VERY low frequency so as to conserve power.  I don't need the
> clock speed because this project will be using the PIC as a glorified 555
> timer, operating in a non time-critical "seconds" range.
>
> My goal is to provide a battery-powered application where the battery life
> will be 1-2 years, if possible.  BTW, the PIC will normally only be active
> approximately 4-5 minutes/day in 20-30 second intervals.
> Comments?
>
> Larry Woods

I finished project using the PIC16F84/DS1302/RF TRANSMISSOR, all powered
by a 9 volts battery!
When i power up the system, the pic16f84 transmit a binary sequence!

I see that my battery is discharging fastly! One solution that i found
was do put cristal of low frequency, and use the DS1302 that works with
2,7V.

Miguel.