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Auxiliary roles in STT-MRAM memory.

Author: Jayita Das; Sanjukta Bhanja; Gokhan Mumcu; Selcuk Kose; Sudeep Sarkar
Publisher: [Tampa, Florida] : University of South Florida, 2014.
Dissertation: Thesis (Ph. D.)--University of South Florida, 2014.
Edition/Format:   Thesis/dissertation : Document : Thesis/dissertation : eBook   Computer File : English
Summary:
Computer memories now play a key role in our everyday life given the increase in the number of connected smart devices and wearables. Recently post-CMOS memory technologies are gaining significant research attention along with the regular ones. Spin Transfer Torque Magnetoresistive RAM (STT-MRAM) is one such post-CMOS memory technology with a rapidly growing commercial interest and potential across diverse  Read more...
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Details

Genre/Form: Academic theses
Material Type: Document, Thesis/dissertation, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Jayita Das; Sanjukta Bhanja; Gokhan Mumcu; Selcuk Kose; Sudeep Sarkar
OCLC Number: 1102275030
Notes: Department: Electrical Engineering.
Advisor: Sanjukta Bhanja.
Description: 1 online resource (123 pages)
Details: Mode of access: World Wide Web.; System requirements: World Wide Web browser and PDF reader.
Other Titles: Auxiliary roles in spin transfer torque magnetoresistive random access memory

Abstract:

Computer memories now play a key role in our everyday life given the increase in the number of connected smart devices and wearables. Recently post-CMOS memory technologies are gaining significant research attention along with the regular ones. Spin Transfer Torque Magnetoresistive RAM (STT-MRAM) is one such post-CMOS memory technology with a rapidly growing commercial interest and potential across diverse application platforms. Research has shown the ability of STT-MRAM to replace different levels of memory hierarchy as well. In brief, STT-MRAM possesses all the favorable properties of a universal memory technology. In this dissertation we have explored the roles of this emerging memory technology beyond traditional storage. The purpose is to enhance the overall performance of the application platform that STT-MRAM is a part of. The roles that we explored are computation and security. We have discussed how the intrinsic properties of STT-MRAM can be used for computation and authentication. The two properties that we are interested in are the dipolar coupling between the magnetic memory cells and the variations in the geometries of the memory cell. Our contributions here are a 22nm CMOS integrated STT-MRAM based logic-in-memory architecture and a geometric variation based STT-MRAM signature generation. In addition we have explored the device physics and the dynamics of STT-MRAM cells to propose a STT based clocking mechanism that is friendlier with the logic-in-memory setup. By investigating the logic layouts and propagation style in the architecture, we have also proposed different techniques that can improve the logic density and performance of the architecture.

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