MICROCOMPUTER

MICROCOMPUTER

PROBLEM TO BE SOLVED: To provide a microcomputer which can achieve security of program stored in a storage means in the microcomputer. SOLUTION: In the microcomputer, the storage area of ROM (Read Only Memory) 1 is divided into a first area and a second area. Access to specified addresses at at leas...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: AKIYAMA KAZUHIKO, KAMBE TAKAYUKI, NUKUSHINA HARUNOBU
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a microcomputer which can achieve security of program stored in a storage means in the microcomputer. SOLUTION: In the microcomputer, the storage area of ROM (Read Only Memory) 1 is divided into a first area and a second area. Access to specified addresses at at least one area between the first area and the second area of the ROM 1 is permitted, and access to remaining addresses is prohibited. COPYRIGHT: (C)2006,JPO&NCIPI