Semiconductor memory device using sub-wordline drivers having wi

Details Semiconductor memory device using sub-wordline drivers having wi Semiconductor memory device using sub-wordline drivers having wi

1996-01-16

1998-02-10

Nelms, David C.

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

36523003, G11C 800

Patent

active

057176493

ABSTRACT:
An improved word line driving circuit for a memory device reduces a driving speed difference between an assistant word line driving unit, which is closest to a memory cell block selection unit, and an assistant word line driving unit, which is farthest from the memory cell block selection unit, for selecting a block of memory cell. Further, the improved circuit substantially allows a non-overlap margin between word lines by differing the size of an assistant word line driving unit connected to each word line according to its location. The improved circuit also includes a memory cell block selection unit for outputting a block selection signal so as to select a memory cell block, a plurality of main word line driving units for outputting a main word line signal, and a plurality of assistant word line driving units.

REFERENCES:
patent: Re32993 (1989-07-01), Anami et al.
patent: 5193076 (1993-03-01), Houston
patent: 5305279 (1994-04-01), Park et al.

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