Hi:

I have a 16F54 that's being used to divide a precision 10 MHz frequency 
source down to a precision 1 PPS output by using the 10 MHz as the PIC 
clock and managing the number of instructions executed. 
http://www.leapsecond.com/tools/PPSDIV.ASM

If the DC is applied then the clock input connected it works the way the 
code would suggest.  But if the clock is connected before the DC power 
is applied strange things happen (LEDs not in the states the code would 
suggest).  Then manually grounding MCLR gets things back to normal, but 
I don't want to add a START switch if there's a way around the phantom 
power problem.

Is there a way to programmatically determine if phantom power has caused 
problems?

Thanks,

Brooke Clarke

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