| 摘要 |
A semiconductor memory device including a memory cell array including a memory cell layer containing plural memory cells operative to store data in accordance with different resistance states; and an access circuit operative to make access to the memory cells, the memory cell changing the resistance state from a first resistance state to a second resistance state on application of a voltage of a first polarity, and changing the resistance state from the second resistance state to the first resistance state on application of a voltage of a second polarity, the access circuit applying voltages, required for access to the memory cell, to first and second lines connected to a selected memory cell, and bringing at least one of the first and second lines connected to non-selected memory cells into the floating state to make access to the selected memory cell. |
