> And I like to know is there anyway to use a 555 timer to generate a
> stable, clean (sharp
> waveform) of 115.2khz.

Yes, but accuracy will be an issue if you want to use this for RS-232
timing.  RS-232 can only tolerate a 5.8% mismatch between the sending and
receiving baud rates at 8 bits per characters.  Of course the mismatch must
be below that in practise because this is the "guaranteed to fail" value.  I
try to stick to half that, or 2.9%.  It will be nearly impossible to
maintain that kind of accuracy with a 555 timer and the associated R/C
components.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@embedinc.com, http://www.embedinc.com

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics