DC Field | Value | Language |
---|---|---|
dc.contributor.author | Seo, Jae-Woo | ko |
dc.contributor.author | Shin, Youngsoo | ko |
dc.date.accessioned | 2016-12-14T00:56:25Z | - |
dc.date.available | 2016-12-14T00:56:25Z | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.created | 2016-11-21 | - |
dc.date.issued | 2017-02-26 | - |
dc.identifier.citation | Conference on Design-Process-Technology Co-Optimization for Manufacturability XI | - |
dc.identifier.issn | 0277-786X | - |
dc.identifier.uri | http://hdl.handle.net/10203/214689 | - |
dc.description.abstract | Bidirectional cell refers to a standard cell, in which metal-1 is used for both horizontal and vertical connections. Unidirectional cell, on the other hand, assumes reserved routing, e.g. metal-1 for only horizontal and metal-2 for only vertical connections. It has been introduced to take advantage of regular metal patterns, which are easier to print and can overcome the lithography limitations in sub-32nm technology. In unidirectional cell, metal-2 is laid out following the cell placement pitch. Since metal-2 pitch is usually different from placement pitch, some within-cell metal-2 become off track. This significantly degrades metal-2 routability. We propose a unidirectional cell with floating metal-2. After initial cell placement, metal-2 segment within each cell is snapped to nearest metal-2 track and is fixed. In addition, we propose cell redesign and post-placement optimization to enhance metal-1 routability. Metal-1 connections are forced to populate in limited number of tracks, so that remaining tracks are exposed during routing. Combined with post-placement optimization, this allows many longer metal-1 tracks to be available for horizontal connection. Experiments with test circuits show that routing errors are reduced by 7% and 60% with the proposed metal-1 considerations and floating metal-2 together. | - |
dc.language | English | - |
dc.publisher | SPIE | - |
dc.title | Routability enhancement through unidirectional standard cells with floating metal-2 | - |
dc.type | Conference | - |
dc.identifier.wosid | 000405560100017 | - |
dc.identifier.scopusid | 2-s2.0-85020511539 | - |
dc.type.rims | CONF | - |
dc.citation.publicationname | Conference on Design-Process-Technology Co-Optimization for Manufacturability XI | - |
dc.identifier.conferencecountry | US | - |
dc.identifier.conferencelocation | San Jose, California | - |
dc.identifier.doi | 10.1117/12.2258010 | - |
dc.contributor.localauthor | Shin, Youngsoo | - |
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