Protection; Hardware Protection - Renesas F-ZTAT H8 Series Hardware Manual

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Section 18 ROM

Protection

There are three kinds of flash memory program/erase protection: hardware protection, software

protection, and error 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), flash memory control register 2 (FLMCR2), erase block register 1 (EBR1), and erase

block register 2 (EBR2). In the error-protected state, the FLMCR1, FLMCR2, EBR1, and EBR2

settings are retained; the P1 and P2 bits can be set, but a transition is not made to program mode or

erase mode. (See table 18.10.)

Rev. 3.00 Mar 21, 2006 page 591 of 814

REJ09B0302-0300