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. 07, 2006
Filed:
Jul. 10, 2002
Applicant:
Kazuhiro Sakemi, Hyogo, JP;
Inventor:
Kazuhiro Sakemi, Hyogo, JP;
Assignees:
Renesas Technology Corp., Tokyo, JP;
Mitsubishi Electric Engineering Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A write buffer drives in a normal operation a level in potential of an I/O line pair in accordance with data externally input to be written, whereas a burn in write buffer is controlled in a test operation by a control circuit to drive the I/O line pair in level. A column address decoder in the test operation is controlled by the control circuit to select simultaneously a plurality of bit line pairs capable of coupling with a single I/O line pair.