Renesas RL78/G1P Hardware User Manual page 672

RL78/G1P
20.8 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 20-11.
FFFFFH
FFF00H
FFEFFH
FFEE0H
FFEDFH
yyyyyH
F4000H
F3FFFH
F2000H
F1FFFH
F1800H
F17FFH
F1000H
F0FFFH
F0800H
F07FFH
Special function registers (2nd SFR)
F0000H
EFFFFH
EF000H
EFFFFH
0FFFFH
10000H
xxxxxH
00000H
Note Code flash memory and RAM address of each product are as follows.
Products

16384  8 bit (00000H to 03FFFH)
RL78/G1P
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Figure 20-11. Invalid access detection area
Special function registers (SFR)
256 bytes
General-purpose registers
32 bytes
Note
RAM
Reserved
Mirror
Reserved
Data flash memory
Reserved
2 Kbytes
Reserved
Note
Code flash memory
Code flash memory
Possibility access
Read
OK
NG
OK
RAM
1536  8 bit (FF900H to FFEFFH)
CHAPTER 20 SAFETY FUNCTIONS
Fetching
instructions
(execute)
Write
NG
OK
OK
NG
NG
OK
OK
NG
OK
NG
NG
OK
Detected lowest address for
read/instruction fetch (execution)
10000H
653