Patent ID: 8077497

Claim:
A resistive memory device comprising: a storage element configured to have a data storage state changing based on resistance change dependent on an application voltage; a first line and a second line configured to supply the application voltage to the storage element; a first drive controller configured to control direct verify operation of making an element current flow through the storage element by stopping voltage supply to the first line after performing writing or erasing of data for the storage element; and a second drive controller configured to reverse polarity of an inter-line voltage between the first line and the second line to polarity different from polarity at the time of latest voltage supply to the first line by potential operation of one of the first line and the second line before stop of voltage supply to the first line by the first drive controller or since end of a discharge period of the first line by the element current in direct verify operation of one of the writing and the erasing, the second drive controller not carrying out polarity reversal of the inter-line voltage in direct verify operation of the other of the writing and the erasing.