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:
Apr. 21, 2009
Filed:
Mar. 01, 2007
Applicants:
Tadashi Nitta, Kyoto, JP;
Kazuyo Nishikawa, Osaka, JP;
Masahiro Ueminami, Kyoto, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 5/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory device includes: a power supply circuit for outputting a power supply voltage used for reading out data; and a power supply circuit status determination circuit for determining whether an operation status of the power supply circuit is such that data can be read out normally. The output of readout data is suppressed while it is determined by the power supply circuit status determination circuit that the operation status is such that data cannot be read out normally.