gEDA-user: AT90S2313

Ramakrishnan Muthukrishnan vu3rdd at gmail.com
Mon Sep 11 13:11:22 EDT 2006


On 9/11/06, Jeff VR <jffvnrkl at gmail.com> wrote:
>
> I've been working on my first design as well and had a similar question
> when using the ATMEG64 micro.  What I found with many of the IC's I use
> in the library is that they were created with these pins assigned by
> default to the Vcc and Vdd nets.  Since these pins are assigned by
> default the author, in an effort to reduce clutter on the symbol, didn't
> draw these pins and made the net attributes invisible.

Oh.. I see. Thanks for the info.

> If you select the symbol, right click and go down into the symbol you
> can view these attributes.  Then press 'e n' (Show invisible) followed
> by 'v e' (View Extents) you should see that the symbol has net
> attributes which assign these pins to the power and ground nets.  Be
> sure to go up out of the symbol without saving.  Someone else may be
> able to suggest an easier way to view this information.

Yes, I am able to see the "net" attributes now. Thanks.

> In my case I wanted to add some decoupling caps to the supply's of these
> devices so I modified the symbol to include these pins and deleted the
> default net assignments.

So, is it okay if I just tie a symbol Vcc to the point to which I want
to route pin 20 (Vdd)?

Thanks a lot.

-- 
  Ramakrishnan - VU3RDD


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