Design of an MTJ-based nonvolatile lookup table circuit using an energy-efficient single-ended logic-in-memory structure

Daisuke Suzuki, Takahiro Hanyu

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

9 Citations (Scopus)

Abstract

A 6-input nonvolatile lookup table (LUT) circuit is proposed using an energy-efficient single-ended logic-in-memory (LIM) structure in conjunction with a magnetic tunnel junction (MTJ) device. While the use of a conventional single-ended LIM structure makes the multi-input LUT circuit compact, a long delay due to the small difference in the MTJ resistance and a large amount of dynamic power consumption due to a DC current path are unavoidable. To overcome the problem, a PMOS feedback transistor which makes it possible to accelerate the logic operation is utilized in the proposed LUT circuit. The use of the PMOS feedback transistor also makes it possible to reduce dynamic power consumption by automatically cutting off the DC current just after logic value '0' is read. In fact, the power-delay product of the proposed 6-input LUT circuit is reduced by 66% in comparison with that of the conventional single-ended one under a 90-nm CMOS technology.

Original languageEnglish
Title of host publicationIEEE 58th International Midwest Symposium on Circuits and Systems
Subtitle of host publicationClimbing to New Heights, MWSCAS 2015 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467365574
DOIs
Publication statusPublished - 2015 Sep 28
Event58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015 - Fort Collins, United States
Duration: 2015 Aug 22015 Aug 5

Publication series

NameMidwest Symposium on Circuits and Systems
Volume2015-September
ISSN (Print)1548-3746

Other

Other58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015
CountryUnited States
CityFort Collins
Period15/8/215/8/5

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Suzuki, D., & Hanyu, T. (2015). Design of an MTJ-based nonvolatile lookup table circuit using an energy-efficient single-ended logic-in-memory structure. In IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings [7282195] (Midwest Symposium on Circuits and Systems; Vol. 2015-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2015.7282195