| 摘要 |
A smartcard ( 1 ) has a memory ( 2 ) of a ROM portion ( 3 ) and an EEPROM portion ( 4 ). A first type of data will be required throughout the life of smartcard ( 1 ) is stored in ROM portion ( 3 ). A second type of program data which is to be used a predetermined number of times early on in the life of smartcard ( 1 ) is stored in EEPROM portion ( 4 ). Generally, the second type of data is stored in at least one lower memory address portion ( 8 ) of EEPROM ( 4 ). The second type of program data is moved from its lower memory address portion in EEPROM ( 4 ) to a higher memory address portion ( 9 ) for execution. The data is then deleted from higher memory address portion ( 9 ). |
