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:
Oct. 16, 2001
Filed:
Jan. 28, 1999
Applicant:
Inventors:
Hiroshi Akamatsu, Hyogo, JP;
Masanori Hayashikoshi, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
The semiconductor memory device in accordance with the present invention allows evaluation of input/output terminal dependency of noise characteristic at the time of data output, it has a normal operation mode and a test mode, and includes a plurality of output at buffers and selecting means for selectively activating at least one output buffer among the plurality of output buffers in the test mode.