Semiconductor device having head only memory with differential a

Details Semiconductor device having head only memory with differential a Semiconductor device having head only memory with differential a

1986-01-17

1989-06-13

Hecker, Stuart N.

Static information storage and retrieval

Read only systems

Semiconductive

365210, 36523003, G11C 1700

Patent

active

048398608

ABSTRACT:
A semiconductor memory includes a dummy cell for forming a reference potential, a read-only memory cell, and a differential amplifier circuit which receives the reference potential formed by the dummy cell and a signal read out from the memory cell. The differential amplifier circuit is dynamically operated so that the semiconductor memory is made smaller in power consumption and size than conventional units. Moreover, in order to reduce the power consumption, the memory cell is brought into the nonselection state when a predetermined time has passed after being selected. In addition, the semiconductor memory is provided with a compensating circuit in order to make the value of the capacitance connected to a word line for transmitting a selecting signal to the memory cell and the value of the capacitance connected to a dummy word line for transmitting a selecting signal to the dummy cell substantially equal to each other. Thus, the changes in potential of both the selecting signals are made substantially equal to each other. Accordingly, it is possible to reduce malfunctions.

REFERENCES:
patent: 3879621 (1975-04-01), Cavaliere et al.
patent: 3983544 (1976-09-01), Dennison et al.
patent: 4031524 (1977-06-01), Heeven
patent: 4136292 (1979-01-01), Suzuki et al.
patent: 4144590 (1979-03-01), Kitagawa et al.
patent: 4441171 (1984-04-01), Hoffmann
patent: 4458348 (1984-07-01), Fukuda et al.
patent: 4482984 (1984-11-01), Oritani
patent: 4551641 (1985-11-01), Pelley, III
patent: 4616392 (1986-10-01), Miyamoto

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