An MOS digital network model on a modified thevenin equivalent for logic simulation

  • Authors:
  • Tsuyoshi Takahashi;Satoshi Kojima;Osamu Yamashiro;Kazuhiko Eguchi;Hideki Fukuda

  • Affiliations:
  • Musashi Works of Hitachi Ltd., 1450 Josuihon-cho, Kodaira - shi, Tokyo 187, Japan;Musashi Works of Hitachi Ltd., 1450 Josuihon-cho, Kodaira - shi, Tokyo 187, Japan;Musashi Works of Hitachi Ltd., 1450 Josuihon-cho, Kodaira - shi, Tokyo 187, Japan;Musashi Works of Hitachi Ltd., 1450 Josuihon-cho, Kodaira - shi, Tokyo 187, Japan;Musashi Works of Hitachi Ltd., 1450 Josuihon-cho, Kodaira - shi, Tokyo 187, Japan

  • Venue:
  • DAC '84 Proceedings of the 21st Design Automation Conference
  • Year:
  • 1984

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Abstract

A novel analytical model of MOS digital networks, which is based on a modified Thevenin equivalent, is described. The model can handle all the primary circuits inherent in MOS technology, such as transistor logics, wired-ORs, tri-state circuits, charge-share operation, and bidirectional pass transistors etc., with precise estimation of delay time. The model has been implemented in a logic/fault simulator, named HASL-GT. Performance of 4 to 10 k events/sec has been obtained on HITAC M-200H(8MIPS). Fault simulation capability has also been implemented using the concurrent method.