Programmable functional device having ferroelectric material

Details Programmable functional device having ferroelectric material Programmable functional device having ferroelectric material

1996-08-20

1999-04-20

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 41, 365145, 307465, H03K 19177

Patent

active

058960422

ABSTRACT:
A switch SW 11 comprises a ferroelectric memory 26 and an AND gate 28. A data input line L11 and an output terminal of the ferroelectric memory 26 are connected to an input terminal of the AND gate 28. Also, the output terminal of the AND gate 28 is connected to an AND input line L21. In order to write the switching data which switches the state of the switch SW11 either to an open state or a closed state into the ferroelectric capacitor 26, ferroelectric capacitors C11 and C12 are polarized in opposite directions with each other. The polarization is carried out in a short period, and the polarization state can be maintained even when the power is turned off. So that, the switching data can be written repeatedly by changing direction of the voltage applied to the ferroelectric capacitors C11 and C12.

REFERENCES:
patent: 4870302 (1989-09-01), Freeman
patent: 5198706 (1993-03-01), Papaliolios
patent: 5258668 (1993-11-01), Cliff et al.
patent: 5434811 (1995-07-01), Evans, Jr. et al.
patent: 5457410 (1995-10-01), Ting
patent: 5495437 (1996-02-01), Tai et al.
patent: 5592411 (1997-01-01), Tai
patent: 5644533 (1997-07-01), Lancaster et al.

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