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    8051 microcontroller (p89v51rd2)

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

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    Re: 8051 microcontroller (p89v51rd2)

    in 8051 pull up resistors placed at port0 only.



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    Re: 8051 microcontroller (p89v51rd2)

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



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    Re: 8051 microcontroller (p89v51rd2)

    your question not clear !!



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    Re: 8051 microcontroller (p89v51rd2)

    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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    Re: 8051 microcontroller (p89v51rd2)

    Quote Originally Posted by Kamlesh dabi View Post
    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??
    pull up resistors in port 0 only in other ports we not need this resistors.



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