Performing Stateful Logic Using Spin-Orbit Torque (SOT) MRAM

Stateful logic is a promising processing-in-memory (PIM) paradigm to perform logic operations using emerging nonvolatile memory cells. While most stateful logic circuits to date focused on technologies such as resistive RAM, we propose two approaches to designing stateful logic using spin orbit torq...

Full description

Saved in:
Bibliographic Details
Main Authors Hoffer, Barak, Kvatinsky, Shahar
Format Journal Article
LanguageEnglish
Published 01.08.2022
Subjects
Computer Science - Emerging Technologies
Online AccessGet full text

Cover

More Information
Summary:Stateful logic is a promising processing-in-memory (PIM) paradigm to perform logic operations using emerging nonvolatile memory cells. While most stateful logic circuits to date focused on technologies such as resistive RAM, we propose two approaches to designing stateful logic using spin orbit torque (SOT) MRAM. The first approach utilizes the separation of read and write paths in SOT devices to perform logic operations. In contrast to previous work, our method utilizes a standard memory structure, and each row can be used as input or output. The second approach uses voltage-gated SOT switching to allow stateful logic in denser memory arrays. We present array structures to support the two approaches and evaluate their functionality using SPICE simulations in the presence of process variation and device mismatch.
DOI:10.48550/arxiv.2208.00741