[SI-LIST] Re: Scaling effects on on-chip power grids
- From: Christopher Jakubiec <Christopher.Jakubiec@xxxxxxx>
- To: cyr_1976@xxxxxxxxx
- Date: Fri, 19 Mar 2004 08:49:24 -0800
Yiran,
I'm not sure that there is a hard fast (normal) rule for a scaling ratio from
0.18um to 0.13um. Is the metal changing from aluminum to copper? How has the
dielectric between metal layers changed? What are the thickness and pitch
limits?
These are the types of issues that can significantly vary your results based on
the
specific technology you are using for your design. Hopefully your Fab has
already
characterized the metal layers and can provide you results that you can use for
your
design rules. TSMC does this as a matter of practice. The last technology
shift that
I worked on was 0.25um to 0.13um, we both modeled and created a test chip
(measured)
to characterize the 8 layers of metal. We then modified our original wire
models based
on the measured results.
Regards,
Chris Jakubiec
Sun Microsystems
Yiran Chen wrote:
>
> Hi, guys
>
> Now I am studying the on-chip power grids scaling issue. It is claimed that
> the on-chip power grids is hard to scaled. Could someone give me a example to
> show what is the normal rule to caculate the scaling ratio of powr supply
> grid.
>
> For example, when we scale our technolgoy from .18um to .13 um, for the metal
> 6 which is used to implement power supply mesh, do we need to shrink the
> width, thickness and pitch of our power supply mesh?
>
> If so ( I believe so), what is the normal ratio? How does this ratio affect
> the RLC of power supply mesh?
>
> Thanks.
>
> Yiran
>
>
> Do you Yahoo!?
> Yahoo! Mail - More reliable, more storage, less spam
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> //www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
> List FAQ wiki page is located at:
> http://si-list.org/wiki/wiki.pl
>
> List technical documents are available at:
> http://www.si-list.org
>
> List archives are viewable at:
> //www.freelists.org/archives/si-list
> or at our remote archives:
> http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
>
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
