发明申请
US20120201070A1 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

NONVOLATILE SEMICONDUCTOR STORAGE DEVICE AND DATA WRITING METHOD THEREFOR
摘要:
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.
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