SEMICONDUCTOR MEMORY HAVING BOTH VOLATILE AND NON-VOLATILE FUNCTIONALITY INCLUDING RESISTANCE CHANGE MATERIAL AND METHOD OF OPERATING
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Abstract
Semiconductor memory is provided wherein a memory cell includes a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to the cell. The cell further includes a nonvolatile memory comprising a resistance change element configured to store data stored in the floating body under any one of a plurality of predetermined conditions. A method of operating semiconductor memory to function as volatile memory, while having the ability to retain stored data when power is discontinued to the semiconductor memory is described.
263 Citations
37 Claims
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1-11. -11. (canceled)
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12. A method of operating semiconductor memory to function as volatile memory, while having the ability to retain stored data when power is discontinued to the semiconductor memory, said method comprising:
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storing data in a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to said memory; and storing data in a resistance change element by configuring the resistance change element in one of a plurality of resistivity states, wherein each of said resistivity states corresponds to a different data value, respectively. - View Dependent Claims (13, 15, 16, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 33, 34, 35, 36)
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14. (canceled)
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18. (canceled)
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19. (canceled)
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31. (canceled)
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32. (canceled)
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37. (canceled)
Specification