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Old 18th August 2008, 10:38 PM   (permalink)
Default 8051 again

how can i obtain a 1Hz square wave from any one of the pins of any port of 8051?
i need to froduce exactly 1hz, can any one help me with the calculations that include the Xtal frequency and other delays?
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Old 18th August 2008, 10:52 PM   (permalink)
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Originally Posted by amsung2 View Post
how can i obtain a 1Hz square wave from any one of the pins of any port of 8051?
i need to froduce exactly 1hz, can any one help me with the calculations that include the Xtal frequency and other delays?
Hi amsung!

There is an excellent tutorial on 8051s at http://www.8052.com/tut8051.phtml, along with exactly the information you are looking for at http://www.8052.com/tuttimer.phtml#How%20Long.

Does that help?


Good luck,

Torben
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