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. 20, 2009
Filed:
Apr. 24, 2007
Applicant:
Tomohito Kawano, Yokohama, JP;
Inventor:
Tomohito Kawano, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory device of this invention includes a first bank, a second bank, and a bank decoder that selects a bank to be activated from the first and second banks. When testing operations of first memory cells and second memory cells, the bank decoder simultaneously selects the first and second banks, and first and second write load circuits simultaneously write data in memory cells in first and second blocks, respectively.