MEMORY SYSTEM
PROBLEM TO BE SOLVED: To provide a memory system in which no third party except a specified person is allowed to easily perform writing to a memory. SOLUTION: A writing mode signal WM is generated when potential of an input terminal 4 shows a specified state by a hardware setting circuit 5. A writin...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a memory system in which no third party except a specified person is allowed to easily perform writing to a memory. SOLUTION: A writing mode signal WM is generated when potential of an input terminal 4 shows a specified state by a hardware setting circuit 5. A writing permission signal S5 is generated when a preset sequence is recognized by a sequence recognizing means 12. A writing signal WS is outputted to a flash memory 3 when the signal WM is generated by the hardware setting circuit 5 and the signal SS is generated by the sequence recognizing means 12 by a writing signal generating circuit 6A. |
|---|