Static information storage and retrieval – Systems using particular element – Ferroelectric
Patent
1991-08-15
1993-06-08
LaRoche, Eugene R.
Static information storage and retrieval
Systems using particular element
Ferroelectric
365149, G11C 1122
Patent
active
052185664
ABSTRACT:
A reference voltage circuit used for determining the polarization state of a ferroelectric capacitor. The circuit includes a pair of ferroelectric capacitors, each polarized to an opposite polarization state. The charge stored in each ferroelectric capacitor is discharged into respective sense capacitors, thereby generating different voltages, each representative of the different polarization states. The sense capacitors are then short circuited together to thereby average the representative voltages and provide a reference voltage that is of intermediate value. The reference voltage can then the used to compare memory cell signals generated by other ferroelectric capacitors to determine the respective polarization states.
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Dinh Son
LaRoche Eugene R.
National Semiconductor Corporation
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