Permanent master block lock in a memory device

Details Permanent master block lock in a memory device Permanent master block lock in a memory device

2005-01-11

2005-01-11

Lebentritt, Michael S. (Department: 2824)

Static information storage and retrieval

Floating gate

Data security

C365S195000, C365S185330, C711S163000, C711S152000

Reexamination Certificate

active

06842371

ABSTRACT:
A master block lock control word is written to a mini array of non-volatile fuses. The control word is recalled and decoded. A successful recall of the control word generates an indication that the master block lock bit is permanently disabled from subsequent changes.

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