| 摘要 |
A control circuit controls memory operations such that, in a first rewriting operation in which a resistance state of a variable resistance element is changed from a first state to a second state, a first voltage pulse is applied to both terminals of a memory cell while limiting the amount of current flowing through the variable resistance element to a value smaller than or equal to a certain small amount of current, in a second rewriting operation in which the resistance state of the variable resistance element is changed from the second state to the first state, a second voltage pulse is applied to both terminals of the memory cell, and, in a reading operation in which the resistance state stored in the variable resistance element is read, a third voltage pulse is applied to both terminals of the memory cell. |
