Patent ID: 7751235

Claim:
A semiconductor memory device comprising: a first resistance change element, a second resistance change element, a third resistance change element, and a fourth resistance change element sequentially arranged apart from each other in a first direction, and configured to record data when an electric current flows perpendicularly to a film surface; a first electrode which connects one terminal of the first resistance change element and one terminal of the second resistance change element; a second electrode which connects one terminal of the third resistance change element and one terminal of the fourth resistance change element; a bit line which connects the other terminal of the second resistance change element and the other terminal of the third resistance change element; a first word line, a second word line, a third word line, and a fourth word line respectively paired with the first resistance change element, the second resistance change element, the third resistance change element, and the fourth resistance change element, arranged apart from the first electrode and the second electrode, and running in a second direction different from the first direction; a first current source which supplies a first electric current to a chain structure having the first resistance change element, the second resistance change element, the third resistance change element, and the fourth resistance change element, the first electrode, the second electrode, and the bit line, when writing data in a selected element among the first resistance change element, the second resistance change element, the third resistance change element, and the fourth resistance change element; and a second current source which supplies a second electric current to a selected word line, among the first word line, the second word line, the third word line, and the fourth word line, which corresponds to the selected element, when writing the data in the selected element.