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H8/3021 Datasheet(PDF) 505 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 505 Page - Renesas Technology Corp

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15. ROM
Rev.2.00 Mar. 22, 2007 Page 481 of 684
REJ09B0352-0200
15.8
Protection
There are three kinds of flash memory program/erase protection: hardware protection, software
protection, and error protection.
15.8.1
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), 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 P bit and E
bit can be set, but a transition is not made to program mode or erase mode. (See table 15.11.)



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