Hullo all;

I am building a home security alarm as a beginner's exercise.
My design uses an R/C timebase running at 32KHz.
I was hoping to divide this down to input 1 second pulses to the RTCC input
of a PIC16C57 and just use some counting subroutines to derive wait/delay/on
 times
since it seemed to me a bit of an overkill to be running at 4MHz, and use lots
 of waiting
routines.
There is, however, an "XL" suffix on the chips I have in stock.
1.      Does this mean that they won't operate with R/C?
2.      Can the PIC's operate down as low as 32KHz using R/C?

Thanx.

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Ken Parkyn                                  email: K.Parkyn@sct.gu.edu.au
Electronics Workshop                        phone: (07) 3875 7289
Division of Science and Technology          fax:   (07) 3875 7656
Griffith University
Nathan QLD 4111
Australia                                   Office: Science 2   Room -1.17
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