NDLI: A framework for early and systematic evaluation of design rules

Content Provider	IEEE Xplore Digital Library
Author	Ghaida, R.S. Gupta, P.
Copyright Year	2009
Description	Author affiliation: Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA (Ghaida, R.S.; Gupta, P.)
Abstract	Design rules have been the primary contract between technology and design and are likely to remain so to preserve abstractions and productivity. While current approaches for defining design rules are largely unsystematic and empirical in nature, this paper offers a novel framework for early and systematic evaluation of design rules and layout styles in terms of major layout characteristics of area, manufacturability, and variability. Due to the focus on co-exploration in early stages of technology development, we use first order models of variability and manufacturability (instead of relying on accurate simulation) and layout topology/congestion-based area estimates (instead of explicit and slow layout generation). The framework is used to efficiently co-evaluate several debatable rules (evaluation for a 104-cell library takes 20 minutes). Results show that: a) diffusion-rounding mainly from diffusion power-straps is a dominant source of variability, b) cell-area overhead of fixed gate-pitch implementation compared to 1D-poly implementation is tolerable (5%) given the improvement in variability, and c) 1D-poly restriction, which improves manufacturability and variability, has almost no area overhead compared to 2D-poly. In addition, we explore gate-spacing rules using our evaluation framework. This exploration yields almost identical values as those of a commercial 65 nm process, which serves as a validation for our approach.
Starting Page	615
Ending Page	622
File Size	606902
Page Count	8
File Format	PDF
ISBN	9781605588001
ISSN	10923152
DOI	10.1145/1687399.1687513
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Topology Lithography Design methodology Permission Circuits Contracts Productivity Pulp manufacturing Virtual manufacturing Libraries
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Computer Science Applications Software

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