Microprocessor with protective device which maintains a clock speed of the CPU below a threshold during programming of EEPROM

摘要

A microprocessor includes a central control unit and a memory of the EEPROM type for use in security-related systems. A protective device assures that a clock speed or frequency of the central control unit will not exceed a limit value at which reading of the memory is reliably assured, during a reading operation in the EEPROM memory.