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'[OT] waggle output pins of 16C73A'
I am a learner of PIC. I am trying to generate a pulse by sending high and
low voltage to output pins of PIC 16C73A. I found certain pins works bur
other not. For example, PIN A2 and PIN C4 work and PIN A4 and PIN C5 not.
Can anybody tell me why?
PORTA.4 is an "open collector" type and can only pull to ground. You
will need a pull-up resistor to see any change. Don't know why you
can't wiggle PORTC.5 unless you've got it set as SDO.
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