Semiconductor Memory Having Both Volatile and Non-Volatile Functionality Including Resistance Change Material and Method of Operating
First Claim
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1. A semiconductor memory cell comprising:
- a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to said cell; and
a nonvolatile memory comprising a resistance change element configured to store data stored in said floating body under any one of a plurality of predetermined conditions.
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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.
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Citations
56 Claims
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1. A semiconductor memory cell comprising:
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a capacitorless transistor having a floating body configured to store data as charge therein when power is applied to said cell; and a nonvolatile memory comprising a resistance change element configured to store data stored in said floating body under any one of a plurality of predetermined conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12-37. -37. (canceled)
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38. A semiconductor memory cell comprising:
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a silicon controlled rectifier device configured to store data when power is applied to said cell; and a nonvolatile memory comprising a resistance change element configured to store data stored in said silicon controlled rectifier device upon transfer thereto. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A semiconductor memory cell comprising:
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a bipolar device configured to store data when power is applied to said cell; and a nonvolatile memory comprising a resistance change element configured to store data stored in said bipolar device upon transfer thereto. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56)
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Specification