Read-only-memory (ROM) having a memory cell that stores a plural

Details Read-only-memory (ROM) having a memory cell that stores a plural Read-only-memory (ROM) having a memory cell that stores a plural

1998-02-24

1999-12-14

Nguyen, Tan T.

Static information storage and retrieval

Read only systems

Semiconductive

365 94, 365104, 365168, G11C 1700

Patent

active

060026073

ABSTRACT:
A column of read-only-memory (ROM) cells is programmed to store two or more bits of information in each cell by forming a plurality of coding (bit) lines adjacent to the column of cells, and selectively connecting the cells to the plurality of coding lines so that the different logic conditions defined by the two or more bits are represented by the coding lines that are connected to a memory cell.

REFERENCES:
patent: 5392233 (1995-02-01), Iwase
patent: 5471416 (1995-11-01), Azmanov
patent: 5494842 (1996-02-01), Azmanov
patent: 5517061 (1996-05-01), Azmanov
patent: 5528534 (1996-06-01), Shoji
patent: 5825686 (1998-10-01), Schmitt-Landsiedel et al.
patent: 5835396 (1998-11-01), Zhang

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