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:
Sep. 19, 2006
Filed:
Jun. 16, 2005
Shigemitsu Tahara, Chitose, JP;
Daisuke Katagiri, Chitose, JP;
Takeshi Shimanuki, Yonezawa, JP;
Masashi Oshiba, Tachikawa, JP;
Shigemitsu Tahara, Chitose, JP;
Daisuke Katagiri, Chitose, JP;
Takeshi Shimanuki, Yonezawa, JP;
Masashi Oshiba, Tachikawa, JP;
Renesas Technology Corp., Tokyo, JP;
Northern Japan Semiconductor Technologies, Inc., Hokkaido, JP;
Abstract
A semiconductor integrated circuit includes a first circuit and a second circuit having a breakdown voltage higher than that of the first circuit. Operation voltages of the first and second circuits can be made equal to or different from each other. The second circuit has a level shift circuit for shifting the level of an output signal of the first circuit in accordance with an operation voltage of the second circuit, an external output buffer having an input that can receive, selectively, an output signal of the level shift circuit or an input signal that bypasses the level shift circuit. When the first and second circuits operate with a low voltage, bypass is selected. In high-voltage operation and burn-in, the level shift circuit is selected.