1. harami

    Thread Starter Member

    Jun 20, 2011
    66
    0
    on pic16f877a, PIN 11,12 and 31,32 they both are VSS and VDD. So can we use only one of them or do we have to use both of them.
     
  2. debjit625

    Well-Known Member

    Apr 17, 2010
    790
    186
    They are connected internally, but Microchip suggests that you should connect both of them properly as they supply power to different modules.

    Good luck
     
    harami likes this.
  3. harami

    Thread Starter Member

    Jun 20, 2011
    66
    0
    thank you debjit625 for your help.
    Really appericated
     
  4. n1ist

    Active Member

    Mar 8, 2009
    171
    16
    You should feed both pairs, and put a 100nF decoupling cap on each pair.
    /mike
     
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