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:
Jan. 12, 2021
Filed:
Sep. 04, 2019
Toshiba Memory Corporation, Tokyo, JP;
Akira Katayama, Yokohama Kanagawa, JP;
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Abstract
A semiconductor memory device includes a control circuit configured to charge a first node to a first voltage based on a resistance of a memory cell when first data is stored, write second data after the first node is charged to the first voltage, charge a second node to a second voltage based on a resistance of the memory cell when second data is stored, and determine, based on the first and second voltages, whether the first data is different from the second data. The circuit includes a first element including a first end coupled to the first node, and a second end coupled to a third node between the first and second nodes, a second element including first and second ends coupled to the first node, and a third element including a first end coupled to the second node and a second end coupled to the third node.