Body bias control for a coarse grained reconfigurable accelerator implemented with Silicon on Thin BOX technology

Honlian Su, Yu Fujita, Hideharu Amano

研究成果: Conference contribution

14 被引用数 (Scopus)

抄録

For low power yet high performance processing in battery driven devices, a coarse grained reconfigurable accelerator called Cool Mega Array (CMA)-SOTB is implemented by using Silicon on Thin BOX (SOTB), a new process technology developed by the Low-power Electronics Association & Project (LEAP). A real chip using a 65nm experimental process achieved a sustained performance of 192MOPS with a power supply of 0.4V and power consumption of 1.7mW. A clock frequency of 89MHz was achieved with a power supply of just 0.4V when a forward bias voltage was given. When using a reverse bias, the leakage current could be suppressed to less than 20μW in the stand-by mode. The key concept of CMA-SOTB is maintaining a balance between performance and leakage current by independently controlling the bias voltages of the PE array and the microcontroller. Evaluations of the operational frequency and power consumption of filter application programs shed light on how to find the combination of bias voltages that achieves the best energy efficiency for a required performance. The range of advantageous power supply voltage for a required performance considering the body bias was also found.

本文言語English
ホスト出版物のタイトルConference Digest - 24th International Conference on Field Programmable Logic and Applications, FPL 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9783000446450
DOI
出版ステータスPublished - 2014 10 16
イベント24th International Conference on Field Programmable Logic and Applications, FPL 2014 - Munich, Germany
継続期間: 2014 9 12014 9 5

出版物シリーズ

名前Conference Digest - 24th International Conference on Field Programmable Logic and Applications, FPL 2014

Other

Other24th International Conference on Field Programmable Logic and Applications, FPL 2014
国/地域Germany
CityMunich
Period14/9/114/9/5

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • ハードウェアとアーキテクチャ

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