Memory protection system

Details Memory protection system Memory protection system

1981-02-18

1983-08-16

Hecker, Stuart N.

Static information storage and retrieval

Powering

Data preservation

365228, G11C 700

Patent

active

043995241

ABSTRACT:
A memory protection system includes an auxiliary power supply source for maintaining information stored in a random access memory when the main power supply is terminated. When the main power supply voltage level becomes lower than a preselected level, a detection unit develops a control signal for applying a disabling signal to a chip selection terminal included in the random access memory, whereby a load such as a central processor unit connected to the random access memory is electrically disconnected from the random access memory to minimize the power dissipation.

REFERENCES:
patent: 3562555 (1971-02-01), Ahrons
patent: 3859638 (1975-01-01), Hume
patent: 4122359 (1978-10-01), Breikss
patent: 4151611 (1979-04-01), Sugawara et al.
patent: 4227257 (1980-10-01), Sato
Parkinson, PCT/US81/00149, Priority Date 2/8/80.

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