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Impact of process parameter and supply voltage fluctuations on multi-threshold-voltage seven-transistor static memory cells

  • Hong Zhu
  • , Volkan Kursun

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

Conventional Static Random Access Memory (SRAM) cells suffer from an intrinsic data instability problem due to directly-accessed data storage nodes during a read operation. Noise margins of memory cells further shrink with increasing variability and decreasing supply voltage in scaled CMOS technologies. A selected set of novel seven-transistor (7T) and conventional six-transistor (6T) multi-threshold-voltage memory circuits are characterized for data stability, write margin, and idle mode leakage currents with an equal area constraint under parameter variations in this paper. The mean of the statistical read static noise margin distribution is enhanced by up to 2.4X and the mean of the statistical array leakage power consumption distribution is reduced by up to 82% with the triple-threshold-voltage 7T SRAM cells as compared to the traditional 6T SRAM cells in a UMC 80nm CMOS technology.

Original languageEnglish
Title of host publicationProceedings of the 14th International Symposium on Quality Electronic Design, ISQED 2013
Pages448-453
Number of pages6
DOIs
Publication statusPublished - 2013
Event14th International Symposium on Quality Electronic Design, ISQED 2013 - Santa Clara, CA, United States
Duration: 4 Mar 20136 Mar 2013

Publication series

NameProceedings - International Symposium on Quality Electronic Design, ISQED
ISSN (Print)1948-3287
ISSN (Electronic)1948-3295

Conference

Conference14th International Symposium on Quality Electronic Design, ISQED 2013
Country/TerritoryUnited States
CitySanta Clara, CA
Period4/03/136/03/13

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • battery lifetime
  • data stability
  • energy efficiency
  • leakage power consumption
  • Noise immunity
  • process variations
  • supply voltage variations
  • write margin

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