Logical operation circuit and logical operation device

Details Logical operation circuit and logical operation device Logical operation circuit and logical operation device

2004-07-12

2008-09-23

Ngo, Chuong D (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C236S038000

Reexamination Certificate

active

07428565

ABSTRACT:
To provide a logical operation circuit and a logical operation device which can performs a logical operation using a ferroelectric capacitor. The area ratio between the ferroelectric capacitors CF1and CF2are set such that the potential difference Vdef between voltages Va1and Va0is as large as possible, and a transistor MP has a threshold voltage Vth which is about½·(Va0+Va1). Thus, the ON/OFF operation margin of the transistor MP can be significantly large. As a result, a reading process can be performed at a high speed without using an amplifying circuit such as a sense amplifier. Also, the logical operation circuit and the logical operation device can be highly integrated with ease since no sense amplifier is used.

REFERENCES:
patent: 5896042 (1999-04-01), Nishimura et al.
patent: 6924663 (2005-08-01), Masui et al.
patent: 2003/0169071 (2003-09-01), Nozawa et al.
patent: 2005/0146922 (2005-07-01), Kameyama et al.
patent: 2000-299000 (2000-10-01), None
patent: 2002157877 (2002-05-01), None

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