Semiconductor memory device and memory access system using a fou

Static information storage and retrieval – Addressing – Particular decoder or driver circuit

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Details

36523001, 36523002, G11C 700

Patent

active

053553489

ABSTRACT:
The disclosed is an DRAM which is accessible in response to four-state address signal. A two-state address signal generator receives the four-state address signal respectively defined by four voltage levels and converts it to a row address signal and a column address signal which are two-state address signals. Converted address signals are supplied to a row decoder and a column decoder, respectively. Address signals for access are supplied without adopting an address multiplexing system, so that it is possible to perform accurate addressing under the requirement of high speed operation. In addition, the number of sense amplifiers to be activated in one read operation can be reduced, and therefore power consumption can be also reduced.

REFERENCES:
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patent: 4636990 (1987-01-01), Buscaglia et al.
patent: 4845678 (1989-07-01), van Berkel
patent: 4929945 (1990-05-01), Kushiyama
patent: 5105386 (1992-04-01), Andoh et al.
patent: 5161218 (1992-11-01), Catlin
IBM Technical Disclosure Bulletin vol. 29 No. 9 Feb. 1987.

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