Protection device for an erasable and reprogrammable read only m

Details Protection device for an erasable and reprogrammable read only m Protection device for an erasable and reprogrammable read only m

1987-12-16

1989-07-18

Fears, Terrell W.

Static information storage and retrieval

Powering

Data preservation

36518904, 36523001, G11C 1300

Patent

active

048499420

ABSTRACT:
A protection device which detects an erasable and programmable ROM is disclosed. The device includes a memory cell and a means for writing and reading the cell as used to program the cell to a given state. The programming of the cell prevents any reprogramming of the memory unless a previous erasure of the cell has occurred.

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