Patent ID: 7148550

Claim:
A semiconductor device comprising: a plurality of magneto-resistance effect elements each having a hard-axis of magnetization and an easy-axis of magnetization, one of binary data being written in all the magneto-resistance effect elements; a first write wiring line which runs along the hard-axis of magnetization of a selected magneto-resistance effect element selected from the magneto-resistance effect elements, and has one end connected to a power supply terminal and the other end connected to only a ground terminal, and through which a first write current flows, the first write current flowing only along one direction of the hard-axis of magnetization to write only the other one of the binary; and a second write wiring line which runs along the easy-axis of magnetization of the selected magneto-resistance effect element and through which a second write current flows, the second write current flowing only along one direction of the easy-axis of magnetization.