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US 5,852,365 AGranted
Variable logic circuit and semiconductor integrated circuit using the same
AssigneeHitachi, Ltd.
InventorsNobuo Tamba, Mitsugu Kusunoki, Takeshi Miyazaki, Akira Masaki, Akira Yamagiwa
Life of this patent
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Abstract
A variable logic circuit comprises a memory cell, a transistor which turns on or off depending on data stored in the memory cell, a transistor which is connected in series to the above-mentioned transistor and is turned on or off by an input signal, a transistor which produces a voltage depending on the conduction states of the above-mentioned transistors, and transfer means which conducts or does not conduct the produced voltage to the output terminal depending on a select signal.
Claims7
A variable logic circuit comprising:
- a memory cell;
- at least one first transistor which turns on or off depending on data stored in said memory cell;
- a second transistor which is connected in series to said first transistor and is turned on or off by an input signal;
- a third transistor which produces a voltage depending on the conduction states of said first and second transistors;
- and
- transfer means which conducts or does not conduct the voltage produced by said third transistor to the output terminal of said variable logic circuit.
3 more elements
Dependencies are inferred from the claim text.