HD64F3048F16 Datasheet, PDF (637/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
18.8 Flash Memory Protection
There are three kinds of flash memory program/erase protection: hardware protection, software
protection, and error protection.
18.8.1 Hardware Protection
Hardware protection refers to a state in which programming/erasing of flash memory is forcibly
disabled or aborted. Hardware protection is reset by settings in flash memory control register 1
(FLMCR1), and erase block register (EBR). In the error-protected state, the FLMCR1, FLMCR2,
and EBR settings are retained; the P and E bits can be set, but a transition is not made to program
mode or erase mode. (See table 18.11.)
Rev. 3.00 Sep 27, 2006 page 609 of 872
REJ09B0325-0300