Semiconductor storage device including variable resistive elements
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United States of America Patent
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Jan 7, 2014
Grant Date -
Feb 2, 2012
app pub date -
Jul 21, 2011
filing date -
Jul 28, 2010
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Abstract
A semiconductor memory device includes: a memory cell array including multiple first lines, multiple second lines crossing the first lines, and memory cells arranged at intersections between the first lines and the second lines and including variable resistive elements; and a control circuit which controls resistance values of the variable resistive elements in a way that a cell voltage is applied to the memory cell arranged at an intersection between a selected first line and a selected second line by applying first and second voltages to the selected first and second lines, respectively. The control circuit applies a voltage gradually raised or lowered from a first initial voltage as the first voltage to the selected first line, and a pulsing voltage as the second voltage to the selected second line.
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