| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a microcomputer, which responds immediately to various specification requirements and various applications from a user, has an advantage of storing data in an EEP-ROM almost permanently as needed, reduces a structure and scale of hardware in use, improves usability of a hardware resource, securely performs high-speed writing according to an element characteristic, and reduces writing time and response time. <P>SOLUTION: The microcomputer 10 of a single chip type has a CPU1, and an EEP-ROM4 in which a user program and data needed to be stored are written in an arbitrary rate, in the main part. The microcomputer 10 further includes a mask ROM3 previously storing a write control program for writing in the EEP-ROM4 as a part of a standard program. <P>COPYRIGHT: (C)2004,JPO</p> |
