System and method for write-protecting predetermined portions of

Details System and method for write-protecting predetermined portions of System and method for write-protecting predetermined portions of

1994-03-18

1995-02-28

Yoo, Do Hyun

Static information storage and retrieval

Read/write circuit

Signals

36518907, 365145, 36518901, 342 51, G11C 700, G11C 1122

Patent

active

053943678

ABSTRACT:
A system and method wherein a predetermined soft fuse value may be written to a corresponding soft fuse register to control subsequent access to a number of lock bits in a non-volatile semiconductor memory array which are provided for selectively precluding writes to predetermined portions of the memory array. In a specific embodiment, the system and method may be utilized in conjunction with radio frequency ("RF") identification ("ID") transponders incorporating a non-volatile ferroelectric random access memory ("FRAM") array integrated circuit.

REFERENCES:
patent: 4958323 (1990-09-01), Sugawara et al.
patent: 4975870 (1990-12-01), Knicely et al.
patent: 5144314 (1992-09-01), Malmberg et al.
patent: 5293610 (1994-03-01), Schwarz

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