M16C6C_15 Datasheet, PDF (17/100 Pages) Renesas Technology Corp – RENESAS MCU

M16C/6C Group
3. Address Space
3. Address Space
3.1 Address Space
The M16C/6C Group has a 1 MB address space from 00000h to FFFFFh. Figure 3.1 shows the Address
Space. Areas that can be accessed vary depending on processor mode and the status of each control bit.
1 MB
address space
Memory expansion mode
00000h
SFR
00400h
Internal RAM
Internal RAM is allocated from
address 00400h higher.
04000h
0D000h
0D800h
Reserved area
External area
SFR
External area
0E000h
10000h
14000h
Internal ROM
(data flash)
Internal ROM
(program ROM 2)
When data flash is enabled
When program ROM 2
is enabled
External area
27000h
Reserved area
28000h
External area
D0000h _{Reserved area}
FFFFFh
Internal ROM
(program ROM 1)
Program ROM 1 is allocated from
address FFFFFh lower.
Notes:
1. Do not access reserved areas.
2. The figure above applies under the following condition:
- The PM13 bit in the PM1 register is 0
(addresses 04000h to 0CFFFh and 80000h to CFFFFh are used as external areas).
Figure 3.1 Address Space
R01DS0034EJ0210 Rev.2.10
Jul 31, 2012
Page 17 of 96