Low-Power 32bit×32bit multiplier design with pipelined block-wise shutdown

  • Authors:
  • Yong-Ju Jang;Yoan Shin;Min-Cheol Hong;Jae-Kyung Wee;Seongsoo Lee

  • Affiliations:
  • School of Electronics Engineering, Soongsil University, Seoul, Korea;School of Electronics Engineering, Soongsil University, Seoul, Korea;School of Electronics Engineering, Soongsil University, Seoul, Korea;School of Electronics Engineering, Soongsil University, Seoul, Korea;School of Electronics Engineering, Soongsil University, Seoul, Korea

  • Venue:
  • HiPC'05 Proceedings of the 12th international conference on High Performance Computing
  • Year:
  • 2005

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Abstract

This paper proposes a novel low-power 32bit×32bit multiplier with pipelined block-wise shutdown scheme. When it idles, it turns off supply voltage to reduce both dynamic and static power. It shutdowns and wakes up sequentially along with pipeline stage to avoid power line noise. In idle mode, the proposed multiplier consumes 0.013mW and 0.006mW in 0.13μm and 0.09μm technologies, respectively, and it reduces power consumption to 0.07%~0.08% of active mode. As fabrication technology becomes small, power efficiency degrades in the conventional clock gating scheme, but the proposed multiplier does not. The low-power design methodology in this paper can be easily adopted in most functional blocks with pipeline architecture.