piclist 2001\02\23\155934a >
Thread: Frequency counting
face BY : Dan Michaels email (remove spam text)

Spehro Pefhany wrote:
>At 03:02 PM 2/23/01 -0500, you wrote:
>>my timer/counter routines, I always use assembler, because
>>>then I know exactly how many clock cycles everything takes,
>>>and still the overhead is sometimes a problem - but then my routines
>>>use timer1 to measure up to 60 Mhz.
>>How do you measure 60MHz with a PIC?
>The baseline PICs will probably work up that frequency, at room
>temperature and with a square wave input. The data sheet says 50MHz
>for the PIC16C54C, for example, over the temperature range, as
>a "characterized but not tested" minimum. (Page 126).

Actually, this refers to the RTCC input. Timer1 is another matter,
as described in my other msg. However, it also appears to work
to that same frequency range.

- dan michaels

http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


See also: www.piclist.com/techref/microchip/time.htm?key=count
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) Frequency counting

month overview.

new search...