Static timing analysis including power supply noise effect on propagation delay in VLSI circuits

  • Authors:
  • Geng Bai;Sudhakar Bobba;Ibrahim N. Hajj

  • Affiliations:
  • CSRL & ECE Dept., University of Illinois, Urbana, IL;Sun Microsystems Inc., 901 San Antonio Road, Palo Alto, CA;CSRL & ECE Dept., University of Illinois, Urbana, IL

  • Venue:
  • Proceedings of the 38th annual Design Automation Conference
  • Year:
  • 2001

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Abstract

This paper presents techniques to include the effect of supply voltage noise on the circuit propagation delay of a digital VLSI circuit. The proposed methods rely on an input-independent approach to calculate the logic gate's worst-case power supply noise. A quasi-static timing analysis is then applied to derive a tight upper-bound on the delay for a selected path with power supply noise effects. This upper-bound can be further reduced by considering the logic constraints and dependencies in the circuit. Experimental results for ISCAS-85 benchmark circuits are presented using the techniques described in the paper. HSPICE simulation results are also used to validate our work.