DFT and minimum leakage pattern generation for static power reduction during test and burn-in

  • Authors:
  • Wei-Chung Kao;Wei-Shun Chuang;Hsiu-Ting Lin;James Chien-Mo Li;Vasco Manquinho

  • Affiliations:
  • Electrical Engineering Department, National Taiwan University, Taipei, Taiwan;Springsoft, Inc., Hsinchu, Taiwan and Electrical Engineering Department, National Taiwan University, Taipei, Taiwan;Electrical Engineering Department, National Taiwan University, Taipei, Taiwan;Electrical Engineering Department, National Taiwan University, Taipei, Taiwan;Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2010

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Abstract

This paper presents a design for testability and minimum leakage pattern generation technique to reduce static power during test and burn-in for nanometer technologies. This technique transforms the minimum leakage pattern generation problem into a pseudo-Boolean optimization (PBO) problem. Nonlinear objective functions of leakage power are approximated by linear ones such that this problem can be solved efficiently by an existing PBO solver. A partitioning-based algorithm is applied for control point insertion and also CPU time reduction. Experimental results on the IEEE ISCAS'89 benchmark circuits using Taiwan Semiconductor Manufacturing Company 90-nm technology show that, for large circuits, the static power is reduced from 8.3% (without partition) to 17.47% (with 64 partitions). Besides, the overall CPU time is reduced from 3600 s (without partition) to 83 s (with 64 partitions). This technique reduces the static power without changing the manufacturing process or library cells.