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16F876 counter speed?

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Einly

Joined: 10 Sep 2003
Posts: 60

16F876 counter speed?
Posted: Wed Feb 02, 2005 1:13 pm

Can anybody tell me what is the maximum reading speed for the 16-bit counter in 16F876-20SP? By using same PIC, If I use fast I/O, what is the maximum speed I can use to read digital input? Thanks! Einly, _________________ Einly

Mark

Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

Re: 16F876 counter speed?

Posted: Wed Feb 02, 2005 2:19 pm

Reply with quote

Einly wrote:

Can anybody tell me what is the maximum reading speed for
the 16-bit counter in 16F876-20SP?

By using same PIC, If I use fast I/O, what is the maximum speed I can
use to read digital input?

Thanks!

Einly,

Better to explain what you are trying to do. At 20MHz each instruction takes 200ns. So to answer your question, you can read the input every 200ns but that is it. At 200ns you can't do anything with it. So the real question would be how fast can I read an input and do this with it.

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