This brief presents a review of developments in spin-transfer-torque magnetoresistive random access memory (STT-MRAM) sensing over the past 20 years from a circuit design perspective. Various sensing schemes are categorized and described according to the data-cell variation-tolerant characteristics, pre-amplifiers, and offset tolerance. Key breakthroughs for achieving the optimal reference scheme, read disturbance prevention, read energy reduction, accurate yield estimation, and overcoming other non-idealities are discussed. This review is intended to facilitate further enhancement of STT-MRAM sensing in advanced technology nodes, thereby fulfilling STT-MRAM's potential as a universal memory.
|Number of pages||7|
|Journal||IEEE Transactions on Circuits and Systems II: Express Briefs|
|Publication status||Published - 2021 Jan|
Bibliographical noteFunding Information:
Manuscript received October 26, 2020; accepted November 21, 2020. Date of publication November 25, 2020; date of current version December 21, 2020. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) under Grant 2020R1F1A1060395. This brief was recommended by Associate Editors Y. Ha and E. Bonizzoni. (Corresponding author: Taehui Na.) Taehui Na is with the Department of Electronics Engineering, Incheon National University, Incheon 22012, South Korea (e-mail: taehui.na@inu. ac.kr).
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering