Energy-aware multiple-valued current-mode sequential circuits using a completion-detection scheme

Hirokatsu Shirahama, Takashi Matsuura, Masanori Natsui, Takahiro Hanyu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A multiple-valued current-mode (MVCM) circuit using current-flow control is proposed for a power-greedy sequential linear-array system. Whenever operation is completed in processing element (PE) at the present stage, every possible current source in the PE at the previous stage is cut off, which greatly reduces the wasted power dissipation due to steady current flows during standby states. The completion of the operation can be easily detected using "operation monitor" that observes input and output signals at latches, and that generates control signal immediately at the time completed. Since the wires of data and control signals are shared in the proposed MVCM circuit, no additional wires are required for currentflow control. In fact, it is demonstrated that the power consumption of the MVCM circuit using the proposed method is reduced to 53 percent in comparison with that without current-source control.

Original languageEnglish
Pages (from-to)2080-2088
Number of pages9
JournalIEICE Transactions on Information and Systems
Issue number8
Publication statusPublished - 2010 Aug


  • Adaptive current control
  • Current-mode circuit
  • Many-core processor
  • Multiple-valued logic

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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