Patent ID: 8750032

Claim:
A semiconductor recording device comprising: a word line extending in a first direction; a bit line extending in a second direction intersecting the first direction; a source line extending in the first direction, or in the second direction; a memory cell disposed at an intersection between the word line and the bit line; and a write circuit for driving the bit line and the source line, wherein the memory cell includes: a switching element for forming a current path between the bit line and the source line when the word line is activated; and first and second variable-resistance type memory elements inserted in series with the current path, wherein application time of a current necessary for changing a resistance value of the first variable-resistance type memory element is longer than application time of a current necessary for changing a resistance value of the second variable-resistance type memory element, and a differential between resistance values of the first variable-resistance type memory element before, and after a change, respectively, differs from a differential between resistance values of the second variable-resistance type memory element before, and after a change, respectively, the write circuit executing a first operation for causing a first current to flow in a third direction on the current path, for a first period of time, and a second operation for causing a second current smaller in value than the first current to flow in a fourth direction opposite to the third direction for a second period of time shorter than the first period of time after the first operation.