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. 07, 2014
Filed:
Sep. 05, 2012
Mitsuaki Honma, Yokohama, JP;
Mitsuaki Honma, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a nonvolatile semiconductor memory device includes a memory cell array and a controller. The controller is configured to perform a verify operation using a first verification voltage and a second verification voltage (first verification voltage<second verification voltage) when first value data is stored in a first memory cell. The controller is configured to determine whether a write operation to the first memory cell is completed or continued based on write data of a second memory cell adjacent to the first memory cell when a threshold voltage of the first memory cell is greater than or equal to the first verification voltage and less than the second verification voltage.