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:
Mar. 25, 2003
Filed:
Aug. 17, 2001
Applicant:
Inventors:
Takahiko Hashidzume, Osaka, JP;
Yoshinori Odake, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/00 ; G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 7/00 ; G11C 1/604 ;
Abstract
A circuit for testing a nonvolatile semiconductor memory includes a serial connection of flash memory cells as a first memory group. In the serial connection, the gates of the flash memory cells have been connected to each other, and a first one of the cells has its source or drain connected to the source or drain of a second one of the cells when the first and second cells are adjacent to each other.