RX610 Group
26. ROM (Flash Memory for Code Storage)
R01UH0032EJ0120 Rev.1.20
Page 904 of 1006
Feb 20, 2013
26.12 ROM Code Protection
ROM code protection is a facility for prohibiting a PROM programmer from reading from or writing to flash memory.
The ROM code in flash memory is a 32-bit code. Figure 26.33 shows the configuration of ROM codes. Set ROM codes
as 32-bit units.
For release from ROM code protection, erase block EB00 (erasure block 00) in boot mode or by user programming.
FFFF FF9Ch
31
0
ROM code
Figure 26.33 Configuration of a ROM Code
Table 26.19 Specifications for ROM Code Protection
ROM Code
State of Protection
Operations at the Time of Connection with the PROM Programmer
0000 0000h
Protection enabled
(ROM code protection 1)
Access (both reading and writing) to the user mat and user boot mat is
prohibited.
0000 0001h
Protection enabled
(ROM code protection 2)
Reading from the user mat and user boot mat is prohibited.
Other than the
above
Protection disabled
Access (both reading and writing) to the user mat and user boot mat is
permitted.
Summary of Contents for RX600 Series
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