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:
Sep. 23, 2014
Filed:
Aug. 02, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Hitoshi Shiga, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a memory cell array, a first buffer, a second buffer, an interface unit and a controller. Data is transferred between the interface unit and the first buffer. The controller controls the first buffer, the second buffer and the interface unit. When receiving a first command and first data at a test time, the controller transfers the first data to the first buffer via the interface unit. When receiving a second command as a dummy command, the controller reads second data from the memory cell array to the second buffer and, at the same time, outputs first data held in the first buffer via the interface unit.