Improvement in Computational Accuracy of Output Transition Time Variation Considering Threshold Voltage Variations

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概要

• 論文の詳細を見る

• Process variation is becoming a primal concern in timing closure of LSI (Large Scale Integrated Circuit) with the progress of process technology scaling. To overcome this problem, SSTA (Statistical Static Timing Analysis) has been intensively studied since it is expected to be one of the most efficient ways for performance estimation. In this paper, we study variation of output transition-time. We firstly clarify that the transition-time variation can not be expressed accurately by a conventional first-order sensitivity-based approach in the case that the input transition-time is slow and the output load is small. We secondly reveal quadratic dependence of the output transition-time to operating margin in voltage. We finally propose a procedure through which the estimation of output transition-time becomes continuously accurate in wide range of input transition-time and output load combinations.

• （社）電子情報通信学会の論文
• 2009-04-01

著者

• KANAMOTO Toshiki

  Renesas Technology Corporation

• HASHIMOTO Masanori

  Osaka University

• SATO Takashi

  Kyoto University

• SATO Takashi

  Tokyo Institute of Technology

• Sakata Tsuyoshi

  Fujitsu Microelectronics Ltd.

• KUROKAWA Atsushi

  Sanyo Semiconductor Co. Ltd.

• Sato T

  Photonic Lattice Inc.:niche Tohoku University

• Masuda Hiroo

  Renesas Technol. Corp. Kodaira‐shi Jpn

• Masuda Hiroo

  Renesas Technology Corp.

• OKUMURA Takaaki

  Semiconductor Technology Academic Research Center

• TAKAFUJI Hiroshi

  RICOH Company Ltd.

• NAKASHIMA Hidenari

  NEC Electronics Corp.

• ONO Nobuto

  Jedat Inc.

• Kurokawa Atsushi

  Sanyo Electric Co. Ltd.

• Hashimoto Masanori

  Osaka Univ. Suita‐shi Jpn

• Kanamoto Toshiki

  Mirai‐selete Sagamihara‐shi Jpn

• Kanamoto Toshiki

  Renesas Technology Corp.

• Kanamoto Toshiki

  Renesas Design Corp.

• Nakashima Hidenari

  Integrated Research Institute Tokyo Institute Of Technology

• Kurokawa Atsushi

  Sanyo Electric Co. Ltd

• Sato Takashi

  Institute Of Physics And Tsukuba Research Center For Interdisciplinary Materials Science University

• Hashimoto Masanori

  Osaka Univ.

• Okumura Takaaki

  Semiconductor Technol. Academic Res. Center

• Masuda Hiroo

  Renesas Electronics Corporation, Takasaki, Gunma 370-0021, Japan

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