Layout optimization of CMOS functional cells

  • Authors:
  • R. L. Maiasz;J. P. Hayes

  • Affiliations:
  • -;-

  • Venue:
  • DAC '87 Proceedings of the 24th ACM/IEEE Design Automation Conference
  • Year:
  • 1987

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Abstract

An optimal non-exhaustive method of minimizing the layout area of complementary series-parallel CMOS functional cells in the standard-cell style is presented. This generalizes earlier work of Uehara and van Cleemput which is heuristic and nonoptimal. A complete graph-theoretical framework for CMOS cell layout is developed and illustrated. The approach demonstrates a new class of graph-based algebras which characterize this layout problem.