>-----Original Message-----
>From: Mike Hord [mailto:gaidinmd@HOTMAIL.COM]
>Sent: 02 June 2004 03:28
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [pic]: PIC vs. 555
>
>
>Not to mention the PITA that getting a 50% duty cycle at the
>exact frequency you want, or getting a duty cycle above 50%
>(right?  Over 50% requires a diode, right?).

50% is easy, you just use the output pin to charge/discharge the timing cap
via a resistor rather than using the normal pins.  The only downside of this
is that frequency stability isn't as good if the output pin is loaded by a
varying amount.

Regards

Mike




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