Resistive memory-based analog synapse: The pursuit for linear and symmetric weight update

Jiyong Woo, Shimeng Yu

Research output: Contribution to journalArticle

11 Scopus citations


This article reviews the recent developments in a type of random access memory (RAM) called resistive RAM (RRAM) for the analog synapse, which is an important building block for neuromorphic computing systems. To achieve high learning accuracy in an artificial neural network based on the backpropagation learning rule, a linear and symmetric weight update behavior of the analog synapse is critical. The physical mechanisms in the RRA M (interfacing switching versus filamentary switching) are discussed, and the pros and cons of each mechanism to emulate the analog synaptic weights are compared. Then, various strategies from a materials and device engineering perspective are surveyed to achieve linearly and symmetric conductance changes under identical pulses. Finally, future research directions are outlined.

Original languageEnglish (US)
Article number8411333
Pages (from-to)36-44
Number of pages9
JournalIEEE Nanotechnology Magazine
Issue number3
StatePublished - Sep 1 2018
Externally publishedYes


ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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