Invention Grant
US08379432B2 Nonvolatile semiconductor storage device and data writing method therefor
有权
非易失性半导体存储器件及其数据写入方法
- Patent Title: Nonvolatile semiconductor storage device and data writing method therefor
- Patent Title (中): 非易失性半导体存储器件及其数据写入方法
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Application No.: US13415953Application Date: 2012-03-09
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Publication No.: US08379432B2Publication Date: 2013-02-19
- Inventor: Hiroshi Maejima , Katsuaki Isobe , Hideo Mukai
- Applicant: Hiroshi Maejima , Katsuaki Isobe , Hideo Mukai
- 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: JP2008-032646 20080214
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A nonvolatile semiconductor storage device includes first and second intersecting wires; a electrically rewritable memory cell disposed at each intersection of the first second wires, including a variable resistor for memorizing a resistance value as data in a nonvolatile manner and a rectifying device are connected in series; and a control circuit which applies a voltage necessary for writing of data to the first and second wires. The control circuit precharges a non-selected second wire to a standby voltage larger than a reference voltage prior to programming a variable resistor connected to selected first and second wires by supplying the reference voltage to a non-selected first wire and the selected second wire, applying to the selected first wire a program voltage for programming of the selected variable resistor and applying to the non-selected second wire a control voltage which prevents the rectifying device from turning ON.
Public/Granted literature
- US20120201070A1 NONVOLATILE SEMICONDUCTOR STORAGE DEVICE AND DATA WRITING METHOD THEREFOR Public/Granted day:2012-08-09
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