piclist 2001\02\23\155934a >
Thread: Frequency counting
www.piclist.com/techref/microchip/time.htm?key=count
flavicon
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.oricomtech,com
==================

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


<1.5.4.16.20010223134535.2e57d940@addr.com>

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...