3-D floating-gate synapse array with spike-time-dependent plasticity

Hyun Seok Choi, Dae Hoon Wee, Hyungjin Kim, Sungjun Kim, Kyung Chang Ryoo, Byung Gook Park, Yoon Kim

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


This paper proposes a 3-D floating-gate (FG) synapse array for neuromorphic applications. The designed device has certain advantages over previous planar FG synapse devices: a smaller cell size due to the stacked structure and smaller operation voltage by the gate-allaround geometry. In addition, the operation method to implement spike time-dependent plasticity is proposed and demonstrated. The proposed array based on commercialized flash memory technology is expected be one of the most promising candidate architecture for neuromorphic applications.

Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalIEEE Transactions on Electron Devices
Issue number1
StatePublished - Jan 2018


  • Floating-gate (FG) synapse
  • Neuromorphic device
  • Spike time-dependent plasticity (STDP)
  • Synapse device


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