Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-12-22
2009-08-11
Nguyen, Hiep T (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
Reexamination Certificate
active
07574576
ABSTRACT:
A semiconductor device includes: a memory cell array that includes non-volatile memory cells; a first memory region and a second memory region that are located in the memory cell array, the first memory region being protected during a protecting period, the second memory region being not protected; an address change circuit that changes an address in an address space of the first memory region and the second memory region in the memory cell array, to an address in an address space of the second memory region, during the protecting period; and a control circuit that prohibits access to the first memory region, and allows access to the second region, during the protecting period.
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Kato Kenta
Nagao Mitsuhiro
Okura Masahiko
Shibata Kenji
Wang Stewart
Nguyen Hiep T
Spansion LLC
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