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. 02, 2019
Filed:
Sep. 11, 2017
Toshiba Memory Corporation, Minato-ku, Tokyo, JP;
Hayao Kasai, Nishitokyo Tokyo, JP;
Osamu Nagao, Yokohama Kanagawa, JP;
Mitsuaki Honma, Fujisawa Kanagawa, JP;
Yoshikazu Harada, Kawasaki Kanagawa, JP;
Akio Sugahara, Yokohama Kanagawa, JP;
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a memory cell, a bit line, a sense amplifier, a word line, and a row decoder. A write operation repeats a program loop including a program operation, first and second verify operations. The row decoder applies a first read voltage to the word line in the first and second verify operations. When the write operation is not suspended, the sense amplifier senses a voltage of the bit line for a first sense period in the first verify operation. When the write operation is suspended, the sense amplifier senses the voltage of the bit line for a second sense period shorter than the first sense period in the initial first verify operation after a resumption of the write operation.