Invention Grant
- Patent Title: Semiconductor memory device and semiconductor device
- Patent Title (中): 半导体存储器件和半导体器件
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Application No.: US13647573Application Date: 2012-10-09
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Publication No.: US09042156B2Publication Date: 2015-05-26
- Inventor: Mitsuru Nakura , Nobuyoshi Awaya , Kazuya Ishihara , Akiyoshi Seko
- Applicant: SHARP KABUSHIKI KAISHA , ELPIDA MEMORY, INC.
- Applicant Address: JP Osaka-shi, Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka-shi, Osaka
- Agency: Nixon & Vanderhye, P.C.
- Priority: JP2011-223087 20111007
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C13/00

Abstract:
A semiconductor memory device includes a writing circuit and a reading circuit. The writing circuit executes a setting action for converting a resistance of a variable resistance element to a low resistance by applying current from one end side to the other end side of a memory cell via the variable resistance element, and a resetting action for converting the resistance to a high resistance by applying current from the other end side to the one end side via the variable resistance element. The reading circuit executes a first reading action for reading a resistance state of the variable resistance element by applying current from one end side to the other end side of the memory cell via the variable resistance element, and a second reading action for reading the resistance state by applying current from the other end side to the one end side via the variable resistance element.
Public/Granted literature
- US20130088911A1 SEMICONDUCTOR MEMORY DEVICE AND SEMICONDUCTOR DEVICE Public/Granted day:2013-04-11
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