Microcomputer with a security function for accessing a...

Details Microcomputer with a security function for accessing a... Microcomputer with a security function for accessing a...

2007-10-09

2007-10-09

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

10951642

ABSTRACT:
A microcomputer comprises: a memory which stores a predetermined program; a CPU which reads the program stored in the memory based on a predetermined instruction to perform a predetermined calculation; and a read controller which controls reading of the program from the memory, and the microcomputer further comprises: a plurality of memory areas disposed in the memory and having distinction bits; distinction unit for distinguishing the memory areas using the different distinction bits; and read access controller for prohibiting the reading from the memory area in which another program is stored based on a distinction result of the distinction unit.

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