Single chip - microcomputer and method for the boat - region - switches

摘要

With a plurality of memory blocks as a pair, a plurality of pairs of the memory blocks is provided and in a case, in which a pair of memory blocks as a new boat - region is designated when a pair of memory blocks as a boat - region, is a value, which is obtained by subtracting a predetermined value from an initial value is obtained, which in the case of the boat - area designation flag of the memory block of all the memory block pairs is set, in the boat - area designation flag each storage block of the other memory block pair stored, and at the time of a system is being is determined when values of the boat - area designation flag in the memory blocks of the other memory block pair are identical and have not the initial value, that a boat - program in the other memory block pair is stored.