Non-volatile memory cell

Details Non-volatile memory cell Non-volatile memory cell

2005-06-28

2005-06-28

Elms, Richard (Department: 2824)

Static information storage and retrieval

Systems using particular element

Magnetoresistive

C365S175000, C365S104000

Reexamination Certificate

active

06912153

ABSTRACT:
A memory cell stores data permanently in a memory material that can assume a first, high-resistance state and a second, low-resistance state, that is in a phase-changeable or ovonic material. A heating device is disposed to heat the memory material at different rates to a programming temperature. The memory material either has a high resistance or a low resistance after cooling, depending on the heating rate. The heating device has a switching device and a heating element in immediate vicinity to the memory material. The switching device has a field-effect transistor and a drain region of the field-effect transistor forms the heating element. Alternatively, the heating element includes a diode or a diode chain.

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Geppert, L.: “Reborn Memory May Put Flash in Shade”, Spectrum: Virtual War, IEEE, Mar. 2002, pp. 20-21.

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