System and method for write-protecting predetermined portions of a memory array
US5394367A · kind A · utility
69Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.