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:
Jul. 31, 2001
Filed:
Jun. 29, 2000
Applicant:
Inventor:
Susumu Tanida, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 8/00 ;
U.S. Cl.
CPC ...
G11C 8/00 ;
Abstract
The present invention provides a semiconductor memory device which can detect without fail an abnormal operating current caused by a defect of a transistor comprising a sense amplifier circuit provided for each operating block in a short period of time, where in a test mode, carried out to see whether or not the operating current of the semiconductor memory device,satisfies the standard, the switching circuit,is provided for activating sense amplifier circuits,to,in all the operating blocks,to,irrelevant of the block selecting signals BS,to BS,inputted from the outside at the time of test mode.