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research article

Resistive Switching Memory Architecture Based on Polarity Controllable Selectors

Levisse, Alexandre Sébastien Julien  
•
Gaillardon, Pierre-Emmanuel Julien Marc  
•
Giraud, Bastien
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December 21, 2018
IEEE Transactions on Nanotechnology

With the continuous scaling of CMOS technology, integrating an embedded high-density non-volatile memory appears to be more and more costly and technologically challenging. Beyond floating-gate memory technologies, bipolar resistive random access memories (RRAM) appear to be one of the most promising technologies. However, when organized in 1 or 2-transistor 1-RRAM (1T1R, 2T1R) architectures, they suffer from large bitcell area, degraded performance, and reliability issue during reset operation. The association of multiple-independent-gate polarity controllable transistors (PCT) with RRAM overcomes these drawbacks while providing a dense structure. In this paper, we present two innovative PCT-based bitcells and propose an extensive study of their functionality, physical design considerations, and performances in read and write operations compared to CMOS-based 1T1R and 2T1R bitcells. The proposed bitcells outperform the performances of 1T1R and 2T1R bitcells in reset (5× to 105× speed improvement) and are competitive in term of area (1.35× to 2.6× area reduction versus 2T1R) and avoid gate overdrive (1.2 V versus more than 2 V in 1T1R bitcells), thus reducing selector reliability concerns. We also propose an innovative programming strategy that takes advantage of the PCT polarity control and enables 500× improvement in reset performance. Finally, the proposed bitcells perform 15%–67% faster than CMOS bitcells in read.

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Type
research article
DOI
10.1109/TNANO.2018.2887140
Author(s)
Levisse, Alexandre Sébastien Julien  
Gaillardon, Pierre-Emmanuel Julien Marc  
Giraud, Bastien
O'Connor, Ian
Noel, Jean Philippe
Moreau, Mathieu
Portal, Jean-Michel
Date Issued

2018-12-21

Published in
IEEE Transactions on Nanotechnology
Volume

18

Start page

184

End page

194

Subjects

Embedded memory

•

bipolar RRAM

•

OxRAM

•

polarity controllable transistors

•

SiNWFET

•

1T1R

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2T1R

•

Logic gates

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Transistors

•

Switches

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Nonvolatile memory

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Programming

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Semiconductor device modeling

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CMOS technology

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
ESL  
FunderGrant Number

EU funding

725657

US foundations

2016016

Available on Infoscience
January 7, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/153352
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