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:
May. 25, 2004
Filed:
Aug. 20, 2002
Applicant:
Inventors:
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A control circuit generates burn-in test signals and a signal on the basis of an address for causing transition of a semiconductor memory device to a burn-in test mode to output the signals to a predecoder. The predecoder outputs signals for selecting even-numbered word lines and signals for causing odd-numbered word lines to be in a non-selected state on the basis of the burn-in test signals at H level and further outputs signals for causing even-numbered word lines to be in a non-selected state and signals for selecting odd-numbered word lines on the basis of the burn-in test signals at H level. As a result, stresses can be effectively applied by the burn-in test.