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:
Feb. 10, 2009
Filed:
Mar. 09, 2006
Shiro Usami, Kyoto, JP;
Daisuke Matsuoka, Osaka, JP;
Shiro Usami, Kyoto, JP;
Daisuke Matsuoka, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a semiconductor integrated circuit device in which a plurality of I/O cells having level shift circuits are placed in an I/O region, two input/output cells respectively have four level shift circuitstoA power supply cell, originally including only wiring for supply of a power supply voltage or a ground voltage, is additionally provided with three level shift circuits, which should originally be placed in the two input/output cells. The level shift circuits in the power supply cell are circuits asked for no high-speed operation and shared by the two input/output cells. This reduces the size of the two input/output cells and reduces the pitch of the I/O cells, permitting a larger number of required pins in a smaller area.