Design of Switched-Current Based Low-Power PIM Vision System for IoT Applications

Zheyu Liu, Zichen Fan, Qi Wei, Xing Wu, Fei Qiao, Ping Jin, Xin Jun Liu, Chengliang Liu, Huazhong Yang

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

1 Scopus citations

Abstract

Neural networks(NN) is becoming dominant in machine learning field for its excellent performance in classification, recognition and so on. However, the huge computation and memory overhead make it hard to implement NN algorithms on the existing platforms with real-time and energy-efficient performance. In this work, a low-power processing-in-memory (PIM) vision system for accelerate binary weight networks is proposed. This architecture utilizes PIM and features an energy-efficient switched current (SI) neuron, employing a network with binary weight and 9-bit activation. Simulation result shows the design occupies 5.82mm2 in SMIC 180nm CMOS technology, which consumes 1.45mW from 1.8V supplies. Our system outperforms the state-of-the-art designs in terms of power consumption and achieves energy efficiency up to 28.25TOPS/W.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
PublisherIEEE Computer Society
Pages181-186
Number of pages6
ISBN (Electronic)9781538670996
DOIs
StatePublished - Jul 2019
Event18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019 - Miami, United States
Duration: 15 Jul 201917 Jul 2019

Publication series

NameProceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI
Volume2019-July
ISSN (Print)2159-3469
ISSN (Electronic)2159-3477

Conference

Conference18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
Country/TerritoryUnited States
CityMiami
Period15/07/1917/07/19

Keywords

  • near sensor processing
  • neural networks
  • processing in memory
  • switched current circuit
  • vision system

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