MNOS Over-write protection circuitry

Details MNOS Over-write protection circuitry MNOS Over-write protection circuitry

1981-07-23

1983-08-09

Hecker, Stuart N.

Static information storage and retrieval

Read/write circuit

Signals

365184, G11C 700

Patent

active

043982697

ABSTRACT:
Apparatus for preventing the writing of data into an MNOS memory during various time intervals, whereby the over-writing and premature fatiguing of the differential voltage separation of the memory cells is prevented. The apparatus comprising an access memory that flags each address when it is first written during a write protect interval so that upon subsequent attempts to write the same address a write abort will occur.

REFERENCES:
patent: 4090258 (1978-05-01), Cricchi
Foglia et al., "Write-Only Core Memory," IBM Tech. Disc. Bul., vol. 5, No. 1, 6/62, pp. 46-47.

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