| 摘要 |
PROBLEM TO BE SOLVED: To provide a microcomputer to detect a noise-sensitive signal and to be restored to be in an original state before a fault state due to noise, etc., when the microcomputer runs away by a malfunction due to noise, etc. SOLUTION: This microcomputer is characterized by arranging signal lines to detect noise, and detecting the noise by its fluctuation and detecting it at a speed higher than a system clock, in addition, storing, saving values of a program counter, a stack pointer, a PSW and a RAM, arranging an auxiliary memory having a reset of the microcomputer and another system reset, resetting the microcomputer, reading the saved values of the program counter, the stack pointer, the PSW and the PAM and restoring the microcomputer to be in a state before the noise is detected when a noise is detected. |
