Invention Grant
US08767437B2 Nonvolatile semiconductor memory device operating stably and method of control therein
有权
稳定运行的非易失性半导体存储器件及其控制方法
- Patent Title: Nonvolatile semiconductor memory device operating stably and method of control therein
- Patent Title (中): 稳定运行的非易失性半导体存储器件及其控制方法
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Application No.: US13423494Application Date: 2012-03-19
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Publication No.: US08767437B2Publication Date: 2014-07-01
- Inventor: Takahiko Sasaki
- Applicant: Takahiko Sasaki
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPP2011-068220 20110325
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A nonvolatile semiconductor memory device comprises a memory cell array, a control circuit, a current limiting circuit and a current suppression circuit. The memory cell array has a first line, a second line, and a memory cell arranged therein, the memory cell being connected between the first line and the second line and including a variable resistance element. The control circuit is configured to apply, via the first line and the second line, a voltage required in operation of the memory cell. The current limiting circuit is connected to the first line and configured to limit a current flowing in the memory cell to a certain limit value. The current suppression circuit is configured connectable to the second line and configured to suppress a current flowing in the second line according to a kind of operation on the memory cell.
Public/Granted literature
- US20120243295A1 NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND METHOD OF CONTROL THEREIN Public/Granted day:2012-09-27
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