I/O pin anomaly. Input pin is sourcing current.

PICMICRO said:

I have been trying to implement charlieplexing of 7-segment display, and lately banging my head to find out, why the leds that ought to be OFF were glowing (all-bit dimly).
Here is what I was surprised to find out
View attachment 65568

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PICMICRO said:

Opps! thanks erics. Internal Pull-ups were indeed the problem, and I went on creating a thread about I/O Pin anomaly.
I disabled it, and the LEDs work fine now.

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