Method of analyzing semiconductor LSI circuit electrostatic...

Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design

Reexamination Certificate

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C716S030000, C716S030000, C716S030000

Reexamination Certificate

active

07114137

ABSTRACT:
An electrostatic discharge analysis method includes extracting the pads from an input layout of the semiconductor integrated circuit; extracting the nets connected to the extracted pads; extracting the protective elements connected to the extracted nets; forming connection nodes that connect the pads or the protective elements to the nets; extracting for each net, distributed resistances that distribute along the net; connecting the distributed resistances to the connection nodes in place of the nets; forming inter-resistance nodes between the distributed resistances; and calculating an inter-pad voltage when flowing electrostatic discharge current between the pads.

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patent: 2002/0152447 (2002-10-01), Venugopal et al.
patent: 2004/0243949 (2004-12-01), Wang et al.
Li et al., “Layout Extraction and Verification Methodlogy for CMOS I/O Circuits”, Proceedings of the 35th annual conference on Design Automation , ACM press, May 1998.
Hayashi et al., “Full-Chip Analysis Method of ESD Protection Network”, Proceedings of the 5th International Symposium on Quality Electronic Design, IEEE Computer Society, Mar. 2004.
Ngan, et al., “Automatic Layout Based Verification of Electrostatic Discharge Paths,” EOS/ESD Symposium, 2A.4.1-2A.4.6, 2001.
Li et al., “Full Chip ESD Design Rule Checking,” ISCAS-2001, V-503-V-506, 2001.

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