Adolfo Cobo (Ingenieria Fotonica) wrote:

>  Hello to all,
>   I need advice with a "problem" I've found: I'm working in a project with
> a PIC16F84-04/P that will be connected to a Pc using the parallel port.

......

>   And now the problem: the current from the pin of parallel port at logic
> level high seems to feed the entire PIC circuit, because it runs even
> without power.......

I think your'e all looking at this wrong.  Powers from the parallel port..
Draws microamps.. (I know.. the diode).  I would say that this phenomenon is a
feature!

Chris Eddy
Pioneer Microsystems, Inc.
Pittsburgh, PA
www.nb.net/~ceddy