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What is suggested debounce time for keypad?

We are using a matrix to detect depressions of a membrane keypad.

From a perspective of human factors what is suggested debounce time?

Thanks,
Doug

Top replies

erik malund over 21 years ago +1

The minimum! I typically use 10milliseconds and have not had any problems. Erik
Drew Davis over 21 years ago +1

http://www.embedded.com/shared/printableArticle.jhtml?articleID=18400810 Usually a scan rate of something like 10 ms will do. I'm not sure what you mean by "human factors". If you don't debounce...