8051 microcontroller (p89v51rd2)

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Kamlesh dabi

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Why we use pull up resister at the ports??
and can we use this resisters at all the ports??

Electronics lovers
 

in 8051 pull up resistors placed at port0 only.
 

but in controller we have provided with some space near ports. why we have that space??
 

your question not clear !!
 

I want to know that as we have pull on resisters on port 1, so can we use these resister on each ports of controller??
 

Kamlesh dabi said:
I want to know that as we have pull on resisters on port 1, so can we use these resister on each ports of controller??
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pull up resistors in port 0 only in other ports we not need this resistors.
 

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