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Bias temperature instability analysis of FinFET based SRAM cells

Published: 24 March 2014 Publication History

Abstract

Bias Temperature Instability (BTI) is posing a major reliability challenge for today's and future semiconductor devices as it degrades their performance. This paper provides a comprehensive BTI impact analysis, in terms of time-dependent degradation, of FinFET based SRAM cell. The evaluation metrics are read Static Noise Margin (SNM), hold SNM and Write Trip Point (WTP); while the aspects investigated include BTI impact dependence on the supply voltage, cell strength, and design styles (6 versus 8 Transistors cell). A comparison between FinFET and planar CMOS based SRAM cells degradation is also covered. The simulation performed on FinFET based cells for 108 seconds of operation under nominal Vdd show that Read SNM degradation is 16.72%, which is 1.17X faster than hold SNM, while WTP improves by 6.82%. In addition, a supply voltage increment of 25% reduces the Read SNM degradation by 40%, while strengthening the cell pull-down transistors by 1.5× reduces the degradation by only 22%. Moreover, the results reveal that 8T cell degrades 1.31× faster than 6T cell, and that FinFET cells are more vulnerable (~ 2×) to BTI degradation than planar CMOS cells.

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Cited By

View all
  • (2017)Towards reliability-aware circuit design in nanoscale finFET technologyProceedings of the 36th International Conference on Computer-Aided Design10.5555/3199700.3199804(780-785)Online publication date: 13-Nov-2017
  • (2017)Mitigation of sense amplifier degradation using input switchingProceedings of the Conference on Design, Automation & Test in Europe10.5555/3130379.3130583(858-863)Online publication date: 27-Mar-2017
  • (2017)Integral Impact of BTI, PVT Variation, and Workload on SRAM Sense AmplifierIEEE Transactions on Very Large Scale Integration (VLSI) Systems10.1109/TVLSI.2016.264361825:4(1444-1454)Online publication date: 1-Apr-2017
  • Show More Cited By

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  1. Bias temperature instability analysis of FinFET based SRAM cells

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        Published In

        cover image ACM Other conferences
        DATE '14: Proceedings of the conference on Design, Automation & Test in Europe
        March 2014
        1959 pages
        ISBN:9783981537024

        Sponsors

        • EDAA: European Design Automation Association
        • ECSI
        • EDAC: Electronic Design Automation Consortium
        • IEEE Council on Electronic Design Automation (CEDA)
        • The Russian Academy of Sciences: The Russian Academy of Sciences

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        European Design and Automation Association

        Leuven, Belgium

        Publication History

        Published: 24 March 2014

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        Author Tags

        1. BTI
        2. NBTI
        3. PBTI
        4. SRAM cell
        5. stability metrics

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        • Research-article

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        DATE '14
        Sponsor:
        • EDAA
        • EDAC
        • The Russian Academy of Sciences
        DATE '14: Design, Automation and Test in Europe
        March 24 - 28, 2014
        Dresden, Germany

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        Overall Acceptance Rate 518 of 1,794 submissions, 29%

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        Cited By

        View all
        • (2017)Towards reliability-aware circuit design in nanoscale finFET technologyProceedings of the 36th International Conference on Computer-Aided Design10.5555/3199700.3199804(780-785)Online publication date: 13-Nov-2017
        • (2017)Mitigation of sense amplifier degradation using input switchingProceedings of the Conference on Design, Automation & Test in Europe10.5555/3130379.3130583(858-863)Online publication date: 27-Mar-2017
        • (2017)Integral Impact of BTI, PVT Variation, and Workload on SRAM Sense AmplifierIEEE Transactions on Very Large Scale Integration (VLSI) Systems10.1109/TVLSI.2016.264361825:4(1444-1454)Online publication date: 1-Apr-2017
        • (2017)Towards reliability-aware circuit design in nanoscale FinFET technology: — New-generation aging model and circuit reliability simulator2017 IEEE/ACM International Conference on Computer-Aided Design (ICCAD)10.1109/ICCAD.2017.8203856(780-785)Online publication date: 13-Nov-2017

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