Renesas RL78 Series User Manual page 766

RL78/G1D
23.3.6 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 23-11.
F F F F F H
Special function register (SFR)
F F F 0 0 H
F F E F F H
General-purpose register
F F E E 0 H
F F E D F H
F F 9 0 0 H
F F 8 F F H
F 8 0 0 0 H
F 7 F F F H
F 2 0 0 0 H
F 1 F F F H
F 1 8 0 0 H
F 1 7 F F H
Data flash memory
F 1 0 0 0 H
F 0 F F F H
F 0 8 0 0 H
F 0 7 F F H
Special function register (2nd SFR)
F 0 0 0 0 H
E F F F F H
E F 0 0 0 H
E E F F F H
1 0 0 0 0 H
0 F F F F H
x x x x x H
Code flash memory
0 0 0 0 0 H
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Figure 23-11. Invalid Access Detection Area
256 byte
32 byte
Note
RAM
Reserved
Mirror
Reserved
2 Kbyte
Reserved
2 Kbyte
Reserved
Note
CHAPTER 23 SAFETY FUNCTIONS
Possibility access
Read
Write
OK
OK
NG
OK
NG
NG
OK
Fetching
instructions
(execute)
NG
OK
NG
OK
NG
OK
NG
OK
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