Exploiting TFET-based technology for energy-efficient STT-MRAM cells

Santiago S. Pérez, Alessandro Bedoya, Luis Miguel Prócel, Ramiro Taco

Research output: Contribution to journalArticlepeer-review

Abstract

Spin-transfer torque magnetic random-access memory (STT-MRAM) has been demonstrated to be a leading candidate for on-chip memory technology. In this work, double-barrier magnetic tunnel junction (DMTJ) is exploited to define STT-MRAMs at the circuit-level (i.e. at the bitcell level). The DMTJ-based bitcells are built from tunnel-FET technology and benchmarked against a calibrated 10 nm-FinFET technology model. STT-MRAM bitcells operate in the ultra-low voltage domain, and are evaluated in terms of energy-efficiency and area. Simulation results points out that the tunnel-FET based solution is the most energy-efficient alternative, in terms of energy-delay-product (EDP), when evaluated at the 6 corner. Quantitatively, when compared against the FinFET-based design, the TFET-based bitcell exhibits 58% lower EDP, 40% better delay and 34% reduced writing energy. Finally, a leakage analysis was also carried out, showing that TFET-based STT-MRAM bitcells have lower leakage current as compared to the FinFET-based counterpart.

Original languageEnglish
Pages (from-to)15-24
Number of pages10
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume73
Issue number1
DOIs
StatePublished - 20 Sep 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 - IOS Press. All rights reserved.

Keywords

  • FinFET
  • Magnetic Tunnel Junction (MTJ)
  • STT-MRAM
  • Tunnel FET
  • double-barrier MTJ (MTJ)

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