| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the erroneous erasure and erroneous writing of a non- volatile memory. SOLUTION: This circuit or system having a non-volatile memory reloadable for each memory block is provided with a protection area (address) designating part, a protection release signal deciding part, and a #WE(write enable) control deciding part so that the erroneous erasure or erroneous writing of non-volatile memory data due to the malfunction of a program can be prevented by controlling a #WE(write enable) signal to the non-volatile memory. Therefore, even at the time of performing erasure or writing to a protection area in a protection non-releasing state, the #WE control is suppressed so that it is possible to prevent the erroneous erasure or erroneous writing of the protection area due to the malfunction of the program.</p> |
