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:
Sep. 12, 2023
Filed:
Aug. 30, 2021
Kioxia Corporation, Tokyo, JP;
Yoshinao Suzuki, Yokohama Kanagawa, JP;
Haruka Shibayama, Kamakura Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor storage device includes a memory cell array and a voltage generation circuit configured to supply voltages of different levels to the memory cell array. The voltage generation circuit includes a first charge pump having a first characteristic and a second charge pump having a second characteristic that is substantially different from the first characteristic, and is controlled to electrically disconnect an output end of the first charge pump and an input end of the second charge pump in a first operation during which a first voltage is supplied to the memory cell array, and to electrically connect the output end of the first charge pump and the input end of the second charge pump in a second operation during which a second voltage higher than the first voltage is supplied to the memory cell array.