| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability and at the same time, achieve a speedy access without causing the reduction in processing speed of an upper device. SOLUTION: A data comparator 13 compares data stored in a dual-port RAM 11 with data stored in a flash memory 12 successively from a start address to a final address. The data comparator 13 outputs an interrupt signal to a CPU 14 when it detects the non-coincidence of data. The CPU 14 erases the erasure block of the flash memory 12 including an address inputted from the data comparator 13 when an interrupt signal is inputted and reads data within the erasure block range from the dual-port RAM 11 and writes the data into the flash memory 12. When the non-volatile memory device 1 is turned on, the CPU 14 transfers all data of the flash memory 12 to the dual-port RAM 11. |
