The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2011
Filed:
Aug. 13, 2008
Applicants:
Katsuya Arai, Kyoto, JP;
Toshihiro Kogami, Kyoto, JP;
Hiroaki Yabu, Kyoto, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor integrated circuit includes an external pad, a ground line, a first protection circuit between the external pad and the ground line, and a second protection circuit between the external pad and the ground line. The second protection circuit is formed by a first protection element, a second protection element, and a resistor. With this structure, the resistance value of the resistor is set to an arbitrary value, so that an unnecessary current which would be generated at the time of power-off of the LSI can be decreased to a value which does not deteriorate the reliability of the LSI.