Method for writing and erasing a non-volatile memory area

Details Method for writing and erasing a non-volatile memory area Method for writing and erasing a non-volatile memory area

2005-12-06

2005-12-06

Portka, Gary (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C711S170000

Reexamination Certificate

active

06973530

ABSTRACT:
A method for the writing and erasing of a non-volatile memory area, in which after error-free writing of the memory area, at least one release pattern is written into a predetermined subarea of the memory area. To be able to reliably ascertain aborted erase operations, prior to the erase operation, invalidity patterns are written into two further subareas of the memory area, the subareas provided for this enclosing those subareas reserved for the release patterns. The presence (in part) of invalidity patterns indicates an erase operation not ended correctly. The method can be used advantageously in controllers having non-volatile memories.

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