| 摘要 |
<p>A single-chip microcomputer comprises a logical circuit (21), a batch ultraviolet erasure type non-volatile memory (22), and an electrically writable/erasable non-volatile memory (23), and the logical circuit (21), the batch ultraviolet erasure type non-volatile memory (22) and the electrically writable/erasable non-volatile memory (23) are integrated on a single semiconductor chip (20). A program necessary for data processing in the single-chip microcomputer is stored in the batch ultraviolet erasure type non-volatile memory (22), and various data units are stored in the electrically writable/erasable non-volatile memory (23). Thus, the program can be easily rewritten, and data erasure due to a power supply abnormality can be prevented.</p> |
