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:
Jul. 28, 2015
Filed:
Jan. 16, 2007
Yoshitaka Suzuki, Tokyo, JP;
Yoshitaka Suzuki, Tokyo, JP;
LAPIS Semiconductor Co., Ltd., Yokohama, JP;
Abstract
The present invention provides a microcomputer having a CPU, a flash ROM which stores programs or the like therein and a read controller which controls reading of the flash ROM. In the microcomputer, the flash ROM is partitioned by sectors. When a read address is designated, the flash ROM outputs read data and security information for a sector corresponding to the read address. On the other hand, the read controller includes a switch which sets whether the flash ROM is of a boot device. When the flash ROM is undesignated as the boot device and the read data is protected by the security information, the read controller stops the output of the read data.