Hi,
The 16F628 has built in Comparators ... so, it's easy to get an interrupt if an input voltage goes under a choosen reference ...
till the regulator has sufficient supply, you can get some 5v absolute reference ...
Why not do it simple ??? ![Roll Eyes (Sarcastic)](images/smilies/rolleyes.gif)
Note a MC33064P5 can also do it ...
Alain
Last edited by Acetronics2; - 18th August 2010 at 21:26.
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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