The impact of interstratal interconnect density on the performance of three-dimensional integrated circuits

  • Authors:
  • Viet H. Nguyen;Phillip Christie

  • Affiliations:
  • Philips Research Leuven, Belgium;Philips Research Leuven, Belgium

  • Venue:
  • Proceedings of the 2005 international workshop on System level interconnect prediction
  • Year:
  • 2005

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Abstract

This work examines the impact of interstratal interconnect density on the wire-length distribution and on the performance of three-dimensional integrated circuits. A model for the wire-length distribution of 3D-ICs, which takes into account the interstratal interconnect density, is proposed first. The wire-length distributions of 2D-IC, homogeneous (ideal), semi-ideal and realistic 3D-ICs containing two strata are generated using the established model. Finally, the system-level performance of these circuits is assessed by evaluating the delay time and the dynamic switching energy of a critical path containing several interconnected inverters. The lengths of wires connecting inverters are randomly sampled from the wire-length distributions of the circuits under investigation. The inverters and interconnects have electrical properties of recent proposals for the 45-nm technology node.