Title:
マイクロコンピュータ
Document Type and Number:
Japanese Patent JP4829618
Kind Code:
B2
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.
Inventors:
Yoshitaka Suzuki
Application Number:
JP2006006957A
Publication Date:
December 07, 2011
Filing Date:
January 16, 2006
Export Citation:
Assignee:
oki Semiconductor Co., Ltd.
International Classes:
G06F21/10; G06F21/60; G06F21/62; G06F21/79
Domestic Patent References:
| JP2006350885A | ||||
| JP7244611A |
Attorney, Agent or Firm:
Kakimoto Yasunari