Re: Build contact nodes

[Ming Deng]

Steven Rubin wrote:

> At 03:47 PM 3/11/2005, you wrote:
>
> > I'm trying to build a new technology in Electric 7.00. For contact 
> > nodes, I specify metal layers and via layer as boxes for main example 
> > and other examples. Do the size of those boxes, or ratio of sizes 
> > between those boxes has effects on such nodes used in actual layout? 
> > If the size matters, do I have to keep the size/ratio for all 
> > examples in addition to the main example?
>
>
> The technology editor expects to see four examples of a contact node.  
> The smallest of the four becomes the default size contact.  The larger 
> ones help define rules for stretching in X, Y, and both X&Y.  Since 
> the cells that define such nodes are done in the Artwork technology, 
> the size will match the final node, but adjusted for the difference in 
> technologies.  Thus, if the contact is 4x4 lambda (in Artwork grid 
> units) then the layout will be 4x4 lambda (in grid units of the target 
> technology).
>
>    -Steven Rubin

What do you mean by "the size will match the final node, but adjusted 
for the difference in technologies"?

The main example of a contact usually has four embedded squares: the 
highlight, the upper layer, the via layer, the lower layer and the port. 
If I have the size of all layer squares set right, will the final arcs 
have the correct data so we can stream them out for tape out?  If yes, 
should I also have all size right for other examples of a contact node?

If we setup a set of  design rules for a technology, will the Maze Route 
or River Route respect those rules when they are looking for the route path?

cheers,

Ming