Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

1984-11-08

1986-10-14

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

365154, 365200, G11C 1300

Patent

active

046176489

ABSTRACT:
A semiconductor integrated circuit device provided with a flip-flop circuit including gates which are connected to each other so as to form a closed loop, is disclosed. The device includes: first means for generating a first write timing signal, a second write timing signal, a diagnosis control signal and diagnostic data which are all concerned with the flip-flop circuit, when the device is diagnosed to detect a fault therein; second means connected to the output side of the flip-flop circuit for making and breaking the closed loop of the gates in accordance with the first write timing signal; third means connected to the output side of the flip-flop circuit for supplying the diagnostic data to the flip-flop circuit in accordance with the second write timing signal; and fourth means connected to the input side of the flip-flop circuit for blocking a signal applied to the input side of the flip-flop circuit, in accordance with the diagnosis control signal.

REFERENCES:
patent: 3761695 (1973-09-01), Eichelberger et al.
patent: 4051352 (1977-09-01), Eichelberger et al.
patent: 4063080 (1977-12-01), Eichelberger et al.
patent: 4074851 (1978-02-01), Eichelberger et al.

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