What is the minimum pulse width required to register on a Propeller's counter m [Archive]

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ElectricAye

01-07-2009, 03:26 AM

Hi all,

anybody out there happen to know what is the minimum pulse width required to register on a Propeller's counter module?

many thanks,
Mark

Beau Schwabe (Parallax)

01-07-2009, 03:39 AM

ElectricAye,

At 80MHz the granularity is 12.5ns, however if you are going to be sure and not miss the pulse then the nyquist width should be 25ns.

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Beau Schwabe (mailto:bschwabe@parallax.com)

IC Layout Engineer
Parallax, Inc.

ElectricAye

01-07-2009, 04:18 AM

Beau,

Okay, that's good news for me.

Thanks for the super fast answer!

http://forums.parallax.com/images/smilies/smile.gif
Mark