Novel complementary resistive switch crossbar memory write and read schemes

Yuanfan Yang, Jimson Mathew, Marco Ottavi, Salvatore Pontarelli, D. K. Pradhan

Research output: Contribution to journalArticle (Academic Journal)peer-review

15 Citations (Scopus)

Abstract

Recent trends in emerging nonvolatile memory systems necessitate efficient read/write (R/W) schemes. Efficient solutions with zero sneak path current, nondestructive R/W operations, minimum area and low power are some of the key requirements. Toward this end, we propose a novel crossbar memory scheme using a configuration row of cells for assisting R/W operations. The proposed write scheme minimizes the overall power consumption compared to the previously proposed write schemes and reduces the state drift problem. We also propose two read schemes, namely, assisted-restoring and self-resetting read. In assisted-restoring scheme, we use the configuration cells which are used in the write scheme, whereas we implement additional circuitry for self-reset which addresses the problem of destructive read. Moreover, by formulating an analytical model of R/W operation, we compare the various schemes. The overhead for the proposed assisted-restoring write/read scheme is an extra redundant row for the given crossbar array. For a typical array size of 200 x 200 the area overhead is about 0.5%, however, there is a 4X improvement in power consumption compared to the recently proposed write schemes. Quantitative analysis of the proposed scheme is analyzed by using simulation and analytical models.

Original languageEnglish
Article number7021958
Pages (from-to)346-357
Number of pages12
JournalIEEE Transactions on Nanotechnology
Volume14
Issue number2
DOIs
Publication statusPublished - 1 Mar 2015

Keywords

  • Complementary resistive switch
  • Memristor
  • Write/read schemes

Fingerprint Dive into the research topics of 'Novel complementary resistive switch crossbar memory write and read schemes'. Together they form a unique fingerprint.

Cite this