A MICROCOMPUTER HAVING A NON-VOLATILE SEMICONDUCTOR MEMORY HAVING A FIRST BLOCK STORING A PROGRAM AND A SECOND BLOCK FOR STORING DATA WHICH IS SELECTIVELY ERASED UNDER PREDETERMINED CONDITIONS IF DATA IS FOUND WRITTEN IN THAT BLOCK

摘要

A microcomputer capable of having a CPU calculate a suitable bit rate with respect to a host computer and of setting accordingly an appropriate erasure time forestalling excess erasure of an internally furnished flash memory regardless of the operating frequency of the microcomputer.