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:
Jul. 22, 2025
Filed:
Aug. 11, 2023
Kioxia Corporation, Tokyo, JP;
Yuko Noda, Kawasaki Kanagawa, JP;
Kiwamu Watanabe, Kawasaki Kanagawa, JP;
Masahiro Saito, Tokyo, JP;
Yoshiki Takai, Fujisawa Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A memory system includes a non-volatile memory including a plurality of memory cells; and a controller. The controller is configured to perform a multi-step write operation to write multi-bit data with respect to each of target memory cells through a first programming to set a first threshold voltage and then a second programming to set a second threshold voltage. The controller, during the multi-step write operation, determines a time period elapsed from a first time at which the first programming with respect to a first memory cell of the target memory cells has been performed, and varies a second time at which the second programming with respect to the first memory cell is performed based on whether the time period is greater than a first threshold.