Ah, yes. My mistake. Thanks for the correction.

With that said, I believe it was a pretty good suggestion, if simply
for the fact that it's easy to implement. At this stage of our
project, we don't have a lot of time left or ability to make sweeping
changes to our design.

So, while the other suggestion that was posted may be more efficient
or "better" overall, yours was a fix we could implement realistically.
Now I'm just concerned about the ground noise.

Thanks much.
Julian


On Tue, 22 Mar 2005 15:10:57 -0800, Bob Barr <bbarr@california.com> wrote:
> On Tue, 22 Mar 2005 15:49:22 -0500, Senior Design wrote:
> 
> >Hello all,
> >
> >I am running two distinct logic circuits, one at 5V and one at 3.3V.
> >The 5V circuitry [PIC demo board] is asserting several control signals
> >into the 3.3V circuitry [MP3 player logic]. Because a "high" value of
> >5V is out of spec for the 3.3V parts, I want to use a voltage divider
> >to deliver approximately 3V of that 5V, and ground the rest. The
> >circuit to do this would presumably be a 3.3k resistor in series with
> >a parallel combination of the destination pin and a 2.2k resistor to
> >ground. (This was suggested to me by member "bob_barr" of the
> >Microchip forums.)
> >
> 
> Actually, my suggestion was for the 2.2K in series with the 3.3K to
> ground. If I'm not mistaken, someone else has suggested a better
> approach on that thread. As I said, someone who knows more about
> hardware than me probably would. :=)
> 
> Regards, Bob
> 
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