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:
Apr. 09, 2019
Filed:
Mar. 09, 2018
Toshiba Memory Corporation, Minato-ku, JP;
Yasuhiro Shimura, Yokohama, JP;
Shinichi Oosera, Yokohama, JP;
Junichi Kijima, Kawasaki, JP;
Tomoki Higashi, Yokohama, JP;
Sumito Ohtsuki, Yokohama, JP;
Tomohiro Oda, Yokohama, JP;
Keisuke Yonehama, Kamakura, JP;
Toshiba Memory Corporation, Minato-ku, JP;
Abstract
According to one embodiment, a semiconductor memory device includes: a memory cell array including a plurality of memory strings, each of the memory strings including a plurality of memory cells connected in series; a plurality of word lines commonly connected to the memory strings and connected to the memory cells; and a control circuit which executes a write operation including a plurality of program loops, each of the program loops including a program operation and a verify operation. When a suspend command for instructing an operation suspend is externally received during execution of the program operation, the control circuit executes a dummy read operation in which the word lines are applied with a voltage after the program operation, and enters into a suspend mode after the dummy read operation.