The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Dec. 22, 2006
Kenta Kato, Aichi, JP;
Masahiko Okura, Aichi, JP;
Kenji Shibata, Aichi, JP;
Mitsuhiro Nagao, Aichi, JP;
Stewart Wang, Fremont, CA (US);
Kenta Kato, Aichi, JP;
Masahiko Okura, Aichi, JP;
Kenji Shibata, Aichi, JP;
Mitsuhiro Nagao, Aichi, JP;
Stewart Wang, Fremont, CA (US);
Spansion LLC, Sunnyvale, CA (US);
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.