Patent ID: 8498142

Claim:
A resistance change memory comprising: row lines extending in a first direction; column lines extending in a second direction cross to the first direction; memory cells each including a resistance change element, and each memory cell provided between one of the row lines and one of the column lines; a first decoder which selects one of the row lines as a selected row line; a second decoder which selects one of the column lines as a selected column line; a voltage pulse generating circuit which generates a voltage pulse; a voltage pulse shaping circuit which makes a rise time and a fall time of the voltage pulse longer; and a control circuit which applies the voltage pulse outputting from the voltage pulse shaping circuit to unselected column lines except the selected column line, and which applies a fixed potential to unselected row lines except the selected row line, in a data writing to a memory cell which is provided between the selected row line and the selected column line.