SEMICONDUCTOR MEMORY DEVICE

摘要

In a semiconductor memory device using a nonvolatile memory, such as EEPROM, even in an event that data stored in the nonvolatile memory cannot be correctly read due to a power supply interruption or the like, a recovery program is activated to quickly recover the function as of a memory device. For this purpose, after the activation of the recovery program stored in a ROM, a program (FW2) stored in the EEPROM is transferred to a RAM, and thereafter, a CPU performs a processing based on the program (FW2) transferred to the RAM.