Special tie-high/low cells for single metal layer route changes

Details Special tie-high/low cells for single metal layer route changes Special tie-high/low cells for single metal layer route changes

2007-03-13

2007-03-13

Whitmore, Stacy A (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

Reexamination Certificate

active

10929218

ABSTRACT:
A method for implementing a circuit design is disclosed. The method generally includes the steps of identifying, replacing and routing. The first step may identify a first cell of the circuit design having (i) a function and (ii) an input pin connectable to one of a first power rail and a second power rail having a different voltage than the first power rail. The second step may replace the first cell with a second cell having (i) the function, (ii) the input pin and (iii) at least one blocking characteristic that reserves (a) a first route completely within a particular conductive layer of the cell between the input pin and the first power rail and (b) a second route completely within the particular conductive layer between the input pin and the second power rail. The third step may route the circuit design incorporating the second cell such that the input pin is connected to one of (i) the first power rail using the first route and (ii) the second power rail using the second route.

REFERENCES:
patent: 6075934 (2000-06-01), Chiluvuri et al.
patent: 6336207 (2002-01-01), Shinomiya et al.
patent: 6598206 (2003-07-01), Darden et al.
patent: 6684377 (2004-01-01), Barney et al.
patent: 6701509 (2004-03-01), Aggarwal et al.
patent: 7003748 (2006-02-01), Hsu
patent: 7076756 (2006-07-01), Ichimiya
patent: 2005/0229133 (2005-10-01), Goto et al.

Affiliated with

Also associated with

Rating

Special tie-high/low cells for single metal layer route changes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Special tie-high/low cells for single metal layer route changes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Special tie-high/low cells for single metal layer route changes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3801577