Reliable backup memory

Details Reliable backup memory Reliable backup memory

1996-08-29

1998-04-28

Yoo, Do Hyun

Static information storage and retrieval

Powering

36518504, 36518509, 36518522, 365201, G11C 1700

Patent

active

057454256

ABSTRACT:
An Electrically Erasable Programmable Read Only Memory (EEPROM) provides backup and initialization data for random access memory (RAM) in a control unit. In order to update the EEPROM with new releases of a program and data, the EEPROM is divided into two segments, each with a separately controllable write enable voltage. Advantageously, this allows a new release to be written into one segment of a single EEPROM without erasing the other segment until the newly written segment has been verified.

REFERENCES:
patent: 5267218 (1993-11-01), Elbert
patent: 5390148 (1995-02-01), Saito
patent: 5444663 (1995-08-01), Furuno et al.
patent: 5508971 (1996-04-01), Cernea et al.
patent: 5592417 (1997-01-01), Mirabel
patent: 5608684 (1997-03-01), Reasoner et al.

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