Demonstration of Differential Mode FeFET-Array for multi-precision storage and IMC applications

Vivek Parmar, Franz Muller, Jing Hua Hsuen, Sandeep Kaur Kingra, Yannick Raffel, Maximillian Lederer, Tarek Ali, Stefan Dunkel, Konrad Seidel, Sven Beyer, Tian Li Wu, Thomas Kampfe, Sourav De, Manan Suri

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Harnessing multibit precision in non-volatile memory (NVM) based synaptic core can accelerate multiply and accumulate (MAC) operation of deep neural network (DNN). However, NVM-based synaptic cores suffer from the trade-off between bit density and performance. The undesired performance degradation with scaling, limited bit precision, and asymmetry associated with weight update poses a severe bottleneck in realizing a high-density synaptic core. In this work, we demonstrate: (i) implementation of novel differential mode ferroelectric field effect transistor (FeFET) (DM-FeFET) based multibit crossbar array of 12 Kbit size. (ii) bit density of 223Mb/mm2, which is ∼2x improvement compared to conventional FeFET array; (iii) 196 TOPS/W energy efficiency for VGG-8 network and (iv) superior bit error rate (BER) resilience showing ∼94% training and 88% inference accuracy with 1% BER.

Original languageEnglish
Title of host publication2023 International VLSI Symposium on Technology, Systems and Applications, VLSI-TSA/VLSI-DAT 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350334166
DOIs
StatePublished - 2023
Event2023 International VLSI Symposium on Technology, Systems and Applications, VLSI-TSA/VLSI-DAT 2023 - Hsinchu, Taiwan
Duration: 17 Apr 202320 Apr 2023

Publication series

Name2023 International VLSI Symposium on Technology, Systems and Applications, VLSI-TSA/VLSI-DAT 2023 - Proceedings

Conference

Conference2023 International VLSI Symposium on Technology, Systems and Applications, VLSI-TSA/VLSI-DAT 2023
Country/TerritoryTaiwan
CityHsinchu
Period17/04/2320/04/23

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