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0.5V image processor with 563 GOPS/W SIMD and 32bit CPU using high voltage clock distribution (HVCD) and adaptive frequency scaling (AFS) with 40nm CMOS

  • M. Nomura
  • , A. Muramatsu
  • , H. Takeno
  • , S. Hattori
  • , D. Ogawa
  • , M. Nasu
  • , K. Hirairi
  • , S. Kumashiro
  • , S. Moriwaki
  • , Y. Yamamoto
  • , S. Miyano
  • , Y. Hiraku
  • , I. Hayashi
  • , K. Yoshioka
  • , A. Shikata
  • , H. Ishikuro
  • , M. Ahn
  • , Y. Okuma
  • , X. Zhang
  • , Y. Ryu
  • K. Ishida, M. Takamiya, T. Kuroda, H. Shinohara, T. Sakurai

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A 0.5V, 10MHz, 9mW image processor with 320 processing element (PE) SIMD and a 32bit CPU has been developed using 40-nm CMOS. High voltage clock distribution (HVCD) reduces the number of excessive hold buffers required in a 0.5-V logic circuit design, thereby reducing the area, delay, and energy of the SIMD by 14 %, 13%, and 6%, respectively. The 0.5-V SIMD with HVCD achieves an energy efficiency of 563 GOPS/W (= 4.26mW at 7.5MHz), the highest yet reported for near-threshold SIMD. In addition, adaptive frequency scaling (AFS), used to mitigate the impact of the ripple of a buck converters, increases average clock frequency by 33%.

Original languageEnglish
Title of host publication2013 Symposium on VLSI Technology, VLSIT 2013 - Digest of Technical Papers
PagesC36-C37
Publication statusPublished - 2013
Event2013 Symposium on VLSI Technology, VLSIT 2013 - Kyoto, Japan
Duration: 2013 Jun 11 → 2013 Jun 13

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Other

Other2013 Symposium on VLSI Technology, VLSIT 2013
Country/TerritoryJapan
CityKyoto
Period13/6/11 → 13/6/13

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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