SRAM dynamic stability: Theory, variability and analysis

Wei Dong, Peng Li, Garng M. Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

39 Citations (Scopus)

Abstract

Technology scaling in sub-100nm regime has significantly shrunk the SRAM stability margins in data retention, read and write operations. Conventional static noise margins (SNMs) are unable to capture nonlinear cell dynamics and become inappropriate for state-of-the-art SRAMs with shrinking access time and/or advanced dynamic read-write-assist circuits. Using the insights gained from rigorous nonlinear system theory, we define the much needed SRAM dynamic noise margins (DNMs). The newly defined DNMs not only capture key SRAM nonlinear dynamical characteristics but also provide valuable design insights. Furthermore, we show how system theory can be exploited to develop CAD algorithms that can analyze SRAM dynamic stability characteristics three orders of magnitude faster than a brute-force approach while maintaining SPICE-level accuracy. We also demonstrate a parametric dynamic stability analysis approach suitable for low-probability cell failures, leading to three orders of magnitude runtime speedup for yield analysis under high-sigma parameter variations.

Original languageEnglish
Title of host publication2008 IEEE/ACM International Conference on Computer-Aided Design Digest of Technical Papers, ICCAD 2008
Pages378-385
Number of pages8
DOIs
Publication statusPublished - 26 Dec 2008
Event2008 International Conference on Computer-Aided Design, ICCAD - San Jose, CA, United States
Duration: 10 Nov 200813 Nov 2008

Publication series

NameIEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD
ISSN (Print)1092-3152

Other

Other2008 International Conference on Computer-Aided Design, ICCAD
CountryUnited States
CitySan Jose, CA
Period10/11/0813/11/08

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ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

Cite this

Dong, W., Li, P., & Huang, G. M. (2008). SRAM dynamic stability: Theory, variability and analysis. In 2008 IEEE/ACM International Conference on Computer-Aided Design Digest of Technical Papers, ICCAD 2008 (pp. 378-385). [4681601] (IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD). https://doi.org/10.1109/ICCAD.2008.4681601