Ferroelectric interruptible read memory

Details Ferroelectric interruptible read memory Ferroelectric interruptible read memory

1994-08-26

1996-01-23

Popek, Joseph A.

Static information storage and retrieval

Systems using particular element

Ferroelectric

365149, G11C 1122

Patent

active

054870305

ABSTRACT:
A memory includes a first ferroelectric capacitor and a second ferroelectric capacitor electrically connected in a parallel arrangement, and writing circuitry that writes controllably different polarization states into the two ferroelectric capacitors using a single input signal. Read circuitry senses the difference in stored polarizations in the first ferroelectric capacitor and the second ferroelectric capacitor. This sensing circuit causes only a partial switching of the polarization state of the first ferroelectric capacitor and does not disturb the polarization state of the second ferroelectric capacitor. There is a restoration circuit to restore the original ferroelectric polarization of the ferroelectric capacitors following reading.

REFERENCES:
patent: 4974204 (1990-11-01), Miller
patent: 5218566 (1993-06-01), Papaliolios
patent: 5270967 (1993-12-01), Moazzami et al.

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