Programmable memory data protection scheme

Details Programmable memory data protection scheme Programmable memory data protection scheme

1989-09-18

1990-12-04

Gossage, Glenn

Static information storage and retrieval

Read/write circuit

Including signal comparison

365195, 365228, G11C 1606

Patent

active

049758780

ABSTRACT:
An integrated, non-volatile memory protect register is provided for the memory array of a monolithic integrated circuit device. The memory array includes a plurality of programmable data storage registers, each having an associated address. The storage register addresses define the storage registers sequentially from an initial register in the array to a final register in the array. The memory protect register stores the address of a preselected storage register in the array. All registers in the array having addresses equal to or greater than the address of the preselected register are protected from any write operation. This address can be "locked" into the memory protect register to provide permanent data security to all protected registers.

REFERENCES:
patent: 3108257 (1963-10-01), Bucholz
patent: 3264615 (1966-08-01), Case et al.
patent: 3328768 (1964-04-01), Amdahl et al.
patent: 3340539 (1967-09-01), Sims, Jr.
patent: 3573855 (1971-04-01), Cragon et al.
patent: 3742458 (1973-06-01), Inoue et al.
patent: 3803559 (1974-04-01), Bandoo et al.
patent: 3916385 (1975-10-01), Parmar et al.
patent: 4177510 (1979-12-01), Appell et al.
patent: 4298934 (1981-11-01), Fischer
patent: 4382279 (1983-05-01), Ugon
patent: 4430709 (1984-02-01), Schleupen
patent: 4521852 (1985-06-01), Guttag
patent: 4521853 (1985-06-01), Guttag
patent: 4577282 (1986-03-01), Caudel et al.
patent: 4584665 (1986-04-01), Vrielink
patent: 4698750 (1987-10-01), Wilkie et al.
patent: 4701846 (1987-10-01), Ikeda et al.
patent: 4744062 (1988-05-01), Nakamura et al.

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