Static information storage and retrieval – Read/write circuit – Precharge
Patent
1980-02-11
1983-01-25
Moffitt, James W.
Static information storage and retrieval
Read/write circuit
Precharge
365205, 365210, G11C 1124
Patent
active
043707378
ABSTRACT:
A sense amplifier for determining the binary logic state of a dynamic memory cell (11.sub.x,y) preamplifies an initial voltage difference established between a first input line (17.sub.y) coupled to the memory cell (11.sub.x,y) and a first reference line (18.sub.y) coupled to a reference cell (32.sub.y). The resulting amplifies voltage difference is generated between a second input line (19) coupled through a coupling device (Q51.sub.y) to the first input line (17.sub.y) and a second reference line (20) coupled through another coupling device (Q52.sub.y) to the first reference line (18.sub.y) by capacitively charging the second lines (19 and 20) preferably with a pair of capacitors (C61 and C62) individually coupled to the second lines (19 and 20). A differential sensing device (90) senses the amplified voltage difference to determine the logic state which is fully restored to the memory cell (11.sub.x,y).
REFERENCES:
patent: 3514765 (1970-05-01), Christensen
patent: 3678473 (1972-07-01), Wahlstrom
patent: 3949383 (1976-04-01), Askin et al.
patent: 3949385 (1976-04-01), Sanoda
patent: 3993917 (1976-11-01), Kalter
IBM Technical Disclosure Bulletin-vol. 20, No. 5; Oct. 1977 pp. 1714-1715.
IEEE Journal of Solid State Circuits-vol. SC-11, No. 5, Oct. 1976 pp. 596-601.
1977 IEEE International Solid-State Circuits Conference, Session I, Feb. 16, 1977; pp. 12-13.
IEEE Journal of Solid-State Circuits-vol. SC-13, No. 5, Oct. 1978 pp. 611-616.
Becker Warren M.
Fairchild Camera and Instrument Corporation
Moffitt James W.
Olsen Kenneth
Pollock Michael
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