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:
Nov. 27, 2007
Filed:
Mar. 23, 2005
Applicant:
Yoshitaka Kimura, Mihama-ku, JP;
Inventor:
Yoshitaka Kimura, Mihama-ku, JP;
Assignee:
Kawasaki Microelectronics, Inc., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of operating a semiconductor integrated circuit including a SRAM block, in which non-volatile data is stored in the SRAM block, is disclosed. In an exemplary embodiment, the non-volatile data is stored by flowing a drain current in one of a pair of pull-down transistors constituting the SRAM cell while supplying a fixed potential to the sources of the pull-down transistors. A semiconductor integrated circuit including a SRAM block and a control circuit that controls the SRAM block to store non-volatile data is also disclosed.