M38203M4 Datasheet, PDF (286/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
3.1 Built-in PROM version
3.1 Built-in PROM version
In contrast with the mask ROM version, the microcomputer with a built-in programmable ROM is called the
built-in programmable ROM version (referred as “the built-in PROM version”).
The following two types of built-in PROM version are available.
•EPROM version.....................The contents of the built-in EPROM version can be written, deleted and
rewritten.
•One Time PROM version.......The contents of the built-in PROM can be written only once and cannot be
deleted and rewritten.
The EPROM version has the function of the One Time PROM version and also permits deleting and
rewriting the contents of the PROM.
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3820 GROUP USER’S MANUAL