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. 28, 2017
Filed:
Mar. 16, 2016
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Reika Ichihara, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
A semiconductor memory device according to the embodiments includes a first wiring, a second wiring that extends to intersect with the first wiring, a memory cell that is disposed on each intersection portion of the first wiring and the second wiring, and includes a variable resistive element, and a control circuit to control a voltage applied to the memory cell. The control circuit applies a read voltage with respect to the memory cell for a plurality of times to determine a resistive state of the memory cell for a plurality of times, so as to obtain a first determination result or a second determination result. The control circuit compares the number of the first determination result with the number of the second determination result, terminates a reading operation when the comparison result satisfies a certain condition, and starts the reading operation again when the condition is not satisfied.