RL78/F13, F14 CHAPTER 27 SAFETY FUNCTIONS
R01UH0368EJ0210 Rev.2.10 1602
Dec 10, 2015
27.3.8 Invalid memory access detection function
The IEC60730 standard mandates checking that the CPU and interrupts are operating correctly.
The illegal memory access detection function triggers a reset if a memory space specified as access-prohibited is
accessed.
The illegal memory access detection function applies to the areas indicated by NG in Figure 27-21.
Figure 27-21. Invalid access detection area
(Notes are listed on the next page.)
Special function register (SFR)
256 bytes
RAM
Note 1
General-purpose register
32 bytes
Code flash memory
Note 1
Special function register (2nd SFR)
2 Kbytes
Reserved
Reserved
Mirror
Data flash memory
Read
Write
Fetching
instructions
(execute)
Possibility access
OK
OK
OK
OK
OK
OK
OK
OK
NG
Note 1
NG
NG
NG
NG
NG
NG
00000H
xxxxxH
FFF00H
yyyyyH
F1000H
F0FFFH
F0800H
F07FFH
F0000H
EF000H
FFFFFH
FFEDFH
FFEE0H
FFEFFH
EFFFFH
EEFFFH