Twisted global column decoder

Details Twisted global column decoder Twisted global column decoder

1998-02-20

1999-09-07

Nelms, David

Static information storage and retrieval

Format or disposition of elements

365 69, G11C 502

Patent

active

059496983

ABSTRACT:
Adjacent global column decode lines in a dynamic random access memory (DRAM) are twisted in combination with a complex twist of digit lines such that one global column decoder line provides access to four non-adjacent digit line pairs. The four non-adjacent digit pairs are routed to external pins, allowing data from each of the pairs to be read or written simultaneously. Further, I/O switches which are located between the twisted global column decoder lines are coupled to outside pairs of the twisted digit lines, and the I/O switches which are located outside the twisted global column decoder lines are coupled to inside ones of the complex twisted digit lines.

REFERENCES:
patent: 4914502 (1990-04-01), Lebowitz et al.
patent: 5091887 (1992-02-01), Asakura
patent: 5287322 (1994-02-01), Rastegar
patent: 5534732 (1996-07-01), DeBrosse et al.
patent: 5732010 (1998-03-01), Takashima et al.

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