Small size ROM

Details Small size ROM Small size ROM

2006-06-06

2006-06-06

Elms, Richard (Department: 2824)

Static information storage and retrieval

Read only systems

C365S063000, C365S104000, C365S189011

Reexamination Certificate

active

07057916

ABSTRACT:
The invention concerns a ROM circuit (40) including columns of storage cells, each column being connected to a bit site (BLi, BLi+1), wherein the columns are arranged in groups of two adjacent columns, each column of a group capable of being selectively activated relative to the other column of the group, thereby enabling the elimination of a connection to the ground of columns and the design of efficient reading amplifiers.

REFERENCES:
patent: 4495602 (1985-01-01), Sheppard
patent: 4651305 (1987-03-01), Davis
patent: 5200922 (1993-04-01), Rao
patent: 5331588 (1994-07-01), Narahara
patent: 5408148 (1995-04-01), Pascucci et al.
patent: 5877982 (1999-03-01), Iwahashi
patent: 5953274 (1999-09-01), Iwahashi
patent: 6107658 (2000-08-01), Itoh et al.
patent: 6282114 (2001-08-01), Hanriat et al.
patent: 6324101 (2001-11-01), Miyawaki
International Search Report from patent application No. PCT/FR01/01608 filed May 23, 2001.
Patent Abstracts of Japan, vol. 1995, No. 08, Sep. 29, 1995 & JP 07 130165 A May 19, 1995.

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