Flat NOR type mask ROM having off-cells disposed at every predet

Details Flat NOR type mask ROM having off-cells disposed at every predet Flat NOR type mask ROM having off-cells disposed at every predet

1996-12-23

1998-11-10

Nelms, David C.

Static information storage and retrieval

Read only systems

Semiconductive

365 72, 257391, 257392, G11C 1712

Patent

active

058353984

ABSTRACT:
A flat NOR type mask ROM includes a plurality of bit-lines that are parallel to each other, a plurality of memory cells provided between adjacent bit-lines and a plurality of word-lines that are parallel to each other and orthogonal to the bit-lines, each word-line being connected to a plurality of the memory cells. The memory cells provided every predetermined number of bit-lines are OFF-cells which are always in an OFF state regardless of a potential level of the respective word-line.

REFERENCES:
patent: 5585297 (1996-12-01), Sheng et al.
patent: 5665621 (1997-09-01), Hong

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