Logical operation circuit and logical operation method

Details Logical operation circuit and logical operation method Logical operation circuit and logical operation method

2003-01-22

2008-11-11

Tan, Vibol (Department: 2819)

Static information storage and retrieval

Systems using particular element

Flip-flop

C365S049130, C365S145000, C365S210130, C365S222000, C326S104000

Reexamination Certificate

active

07450412

ABSTRACT:
To provide a logical operation circuit which can perform a logical operation using a ferroelectric capacitor and a logical operation method. A logical operation circuit1has a ferroelectric capacitors CF and a transistor MP. The ferroelectric capacitor CF can retain a polarization state P1(y=1) or P2(y=0) corresponding to first operation target data y. In an operation process, a first terminal3of the ferroelectric capacitor1is precharged to a source potential Vdd, and a potential corresponding to second operation target data x, that is, a ground potential GND (x=1) or the source potential Vdd (x=0), is given to a second terminal5of the ferroelectric capacitor via a bit line BL. When the threshold voltage Vth of the transistor MP is set properly, the transistor MP becomes on or off (on, on, on, off) depending on the combination of x and y (0-0, 0-1, 1-0, 1-1).

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Kimura, et al., “Ferroelectric-Based Functional Pass-Gate for Low-Power VLSI”, 2002 Symposium On VLSI Circuits Digest of Technical Papers, pp. 196-199, Japan, no month.

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