wake up from sleep question

I want to wake up a 16f84 from sleep scan the A ****t for highs
and then have the pic go back to sleep. the pic is waking up with
the RB0 I/P, do i need to get the pic to wait a short while after
wakeup before going to the subroutine to look at the A ****t?
is there anything unusual I need to consider? timing etc?.


thanks for any advice

H