skip to main content
10.1145/2333660.2333665acmconferencesArticle/Chapter ViewAbstractPublication PagesislpedConference Proceedingsconference-collections
research-article

High-performance low-energy STT MRAM based on balanced write scheme

Published: 30 July 2012 Publication History

Abstract

It is well known that high write time/energy in STT MRAM are aggravated by the asymmetry in write currents for '0'→'1' and '1'→'0' transitions. This asymmetry is primarily due to the source degeneration of the access transistor during write. In this work, we propose a design methodology which avoids the source degeneration of the access transistor, leading to balanced switching times for '0'→'1' and '1'→'0' transitions.
This is achieved by using an additional (negative) bit-line voltage and reduced word-line voltage. The proposed method reduces write time (by ~40%) and write energy (by 65%), enhances reliability of MTJ, and significantly improves tolerance to process variation. In the proposed scheme, source-line can be directly connected to ground signal leading to a compact cell layout.

References

[1]
Berkeley BSIM Group. Berkeley Short-Channel IGFET Model. www-device.eecs.berkeley.edu/bsim/, 2012.
[2]
S. Chatterjee et al. A scalable design methodology for energy minimization of STTRAM: a circuit and architecture perspective. IEEE Trans. VLSI, 19(5):809--817, May 2011.
[3]
X. Fong et al. KNACK: A hybrid spin-charge mixed-mode simulator for evaluating different genres of spin-transfer torque MRAM bit-cells. In Proc. SISPAD, pages 51--54, Sep. 2011.
[4]
S. Gupta, S. Park, N. Mojumder, and K. Roy. Layout-aware optimization of STT MRAMs. In DATE, 2012.
[5]
F. Hamzaoglu et al. A 3.8GHz 153Mb SRAM design with dynamic stability enhancement and leakage reduction in 45nm high-k metal gate CMOS technology. IEEE J. Solid-State Circuits, 44(1):148--154, Jan. 2009.
[6]
F. Ishihara, F. Sheikh, and B. Nikolic. Level conversion for dual-supply systems. IEEE Trans. VLSI, 12(2):185--195, Feb. 2004.
[7]
K. J. Lee, O. Redon, and B. Dieny. Analytical investigation of spin-transfer dynamics using a perpendicular-to-plane polarizer. Appl. Phys. Lett., 86:022505-1-022505-3, 2005.
[8]
J. Li, P. Ndai, A. Goel, S. Salahuddin, and K. Roy. Design paradigm for robust spin-torque transfer magnetic RAM (STT MRAM) from circuit/architecture perspective. IEEE Trans. VLSI, 18(12):1710--1723, Dec. 2010.
[9]
C. J. Lin et al. 45nm low power CMOS logic compatible embedded STT MRAM utilizing a reverse-connection 1T/1MTJ cell. In IEEE IEDM Dig. Tech., pages 279--282, Dec. 2009.
[10]
A. Nigam et al. Delivering on the promise of universal memory for spin-transfer torque RAM (STT-RAM). In Proc. ISLPED, pages 121--126, Aug. 2011.
[11]
G. Sun, X. Dong, Y. Xie, J. Li, and Y. Chen. A novel architecture of the 3D stacked MRAM L2 cache for CMPs. In Proc. IEEE HPCA, pages 239--249, Feb. 2009.
[12]
M. Togo, K. Noda, and T. Tanigawa. Multiple-thickness gate oxide and dual-gate technologies for high-performance logic-embedded DRAMs. In IEEE IEDM Dig. Tech., pages 347--350, Dec. 1998.
[13]
S. Wolf et al. The promise of nanomagnetics and spintronics for future logic and universal memory. Proceedings of the IEEE, 98(12):2155--2168, Dec. 2010.
[14]
E. Wu and E. Nowak. Voltage-splitting technique for reliability evaluation of off-state mode of MOSFETs in ultrathin gate oxides. IEEE Electron Devices Lett., 25(6):414--416, Jun. 2004.
[15]
P. Zhou, B. Zhao, J. Yang, and Y. Zhang. Energy reduction for STT-RAM using early write termination. In Proc. IEEE ICCAD, pages 264--268, Nov. 2009.

Cited By

View all
  • (2024)A Case Study for Improving Performances of Deep-Learning Processor with MRAMIPSJ Transactions on System and LSI Design Methodology10.2197/ipsjtsldm.17.717(7-15)Online publication date: 2024
  • (2022)FinFET Fin-Trimming During Replacement Metal Gate for an Asymmetric Device Toward STT MRAM Performance EnhancementIEEE Transactions on Electron Devices10.1109/TED.2022.321720669:12(6699-6704)Online publication date: Dec-2022
  • (2022)Data Leakage through Self-Terminated Write Schemes in Memristive Caches2022 27th Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASP-DAC52403.2022.9712492(666-671)Online publication date: 17-Jan-2022
  • Show More Cited By

Index Terms

  1. High-performance low-energy STT MRAM based on balanced write scheme

    Recommendations

    Comments

    Information & Contributors

    Information

    Published In

    cover image ACM Conferences
    ISLPED '12: Proceedings of the 2012 ACM/IEEE international symposium on Low power electronics and design
    July 2012
    438 pages
    ISBN:9781450312493
    DOI:10.1145/2333660
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

    Sponsors

    Publisher

    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 30 July 2012

    Permissions

    Request permissions for this article.

    Check for updates

    Author Tags

    1. balanced write
    2. low energy
    3. process variation
    4. stt mram

    Qualifiers

    • Research-article

    Conference

    ISLPED'12
    Sponsor:
    ISLPED'12: International Symposium on Low Power Electronics and Design
    July 30 - August 1, 2012
    California, Redondo Beach, USA

    Acceptance Rates

    Overall Acceptance Rate 398 of 1,159 submissions, 34%

    Contributors

    Other Metrics

    Bibliometrics & Citations

    Bibliometrics

    Article Metrics

    • Downloads (Last 12 months)44
    • Downloads (Last 6 weeks)4
    Reflects downloads up to 28 Feb 2025

    Other Metrics

    Citations

    Cited By

    View all
    • (2024)A Case Study for Improving Performances of Deep-Learning Processor with MRAMIPSJ Transactions on System and LSI Design Methodology10.2197/ipsjtsldm.17.717(7-15)Online publication date: 2024
    • (2022)FinFET Fin-Trimming During Replacement Metal Gate for an Asymmetric Device Toward STT MRAM Performance EnhancementIEEE Transactions on Electron Devices10.1109/TED.2022.321720669:12(6699-6704)Online publication date: Dec-2022
    • (2022)Data Leakage through Self-Terminated Write Schemes in Memristive Caches2022 27th Asia and South Pacific Design Automation Conference (ASP-DAC)10.1109/ASP-DAC52403.2022.9712492(666-671)Online publication date: 17-Jan-2022
    • (2022)Proactively Invalidating Dead Blocks to Enable Fast Writes in STT-MRAM CachesIEEE Access10.1109/ACCESS.2022.315849310(29419-29431)Online publication date: 2022
    • (2021)Comprehensive Study of Side-Channel Attack on Emerging Non-Volatile MemoriesJournal of Low Power Electronics and Applications10.3390/jlpea1104003811:4(38)Online publication date: 28-Sep-2021
    • (2021)SecNVM: Power Side-Channel Elimination Using On-Chip Capacitors for Highly Secure Emerging NVMIEEE Transactions on Very Large Scale Integration (VLSI) Systems10.1109/TVLSI.2021.308773429:8(1518-1528)Online publication date: Aug-2021
    • (2021)Defect and Fault Modeling Framework for STT-MRAM TestingIEEE Transactions on Emerging Topics in Computing10.1109/TETC.2019.29603759:2(707-723)Online publication date: 1-Apr-2021
    • (2021)Characterization, Modeling, and Test of Intermediate State Defects in STT-MRAMsIEEE Transactions on Computers10.1109/TC.2021.3125228(1-1)Online publication date: 2021
    • (2020)Mitigating Read Failures in STT-MRAM2020 IEEE 38th VLSI Test Symposium (VTS)10.1109/VTS48691.2020.9107605(1-6)Online publication date: Apr-2020
    • (2020)CAST: Content-Aware STT-MRAM Cache Write Management for Different Levels of ApproximationIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2020.298632039:12(4385-4398)Online publication date: Dec-2020
    • Show More Cited By

    View Options

    Login options

    View options

    PDF

    View or Download as a PDF file.

    PDF

    eReader

    View online with eReader.

    eReader

    Figures

    Tables

    Media

    Share

    Share

    Share this Publication link

    Share on social media