Semiconductor data storage apparatus

Details Semiconductor data storage apparatus Semiconductor data storage apparatus

1996-06-24

1997-08-05

Nguyen, Viet Q.

Static information storage and retrieval

Read/write circuit

365218, 365194, 36523006, G11C 1606

Patent

active

056549237

ABSTRACT:
A semiconductor data storage apparatus having a plurality of memory devices which are switched to a predetermined mode when a software command has been written, which have waiting time during execution of the command after the command has been written and from which data can be collectively erased, the semiconductor data storage apparatus being arranged to shorten the time required to erase data. A memory device is activated in response to a memory selection signal supplied by a decoder, a write enable signal, which has been, by an AND gate circuit, selectively supplied in response to the selection signal, brings the memory device into a write mode, upper address signals are sequentially switched during waiting time during execution of erasure after an erase command has been written so as to sequentially write erase commands on next memory devices by the decoder and AND gate circuits.

REFERENCES:
patent: 5355342 (1994-10-01), Ueoka
patent: 5426753 (1995-06-01), Moon
patent: 5457651 (1995-10-01), Rouy

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