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:
Feb. 05, 2019
Filed:
Sep. 01, 2017
Toshiba Memory Corporation, Tokyo, JP;
Megumu Hori, Yokohama Kanagawa, JP;
Yoshihisa Iwata, Yokohama Kanagawa, JP;
Toshiba Memory Corporation, Tokyo, JP;
Abstract
A semiconductor memory device includes a first memory cell having a first end connected to a first wiring and a second end connected to a second wiring and a second memory cell having a first end connected to the first wiring and a second end connected to a third wiring. A sense amplifier is configured to: sense a first current flowing in the first wiring when a first voltage is applied to the second and third wirings and a second voltage, larger than the first voltage, is applied to the first wiring; and sense a second current flowing in the first wiring when a third voltage larger than the second voltage is applied to the first wiring, the first voltage to the second wiring, and the second voltage to the third wiring. The sense amplifier reads data according to a difference between the first current and the second current.