ADDRESS SPACE
3.4 Internal RAM and SFR Areas
3
3.4 Internal RAM and SFR Areas
The 8-Mbyte area from the address H’0080 0000 to the address H’00FF FFFF comprise the internal RAM and
SFR (Special Function Register) areas. Of these, the space that the user can actually use is a 128-Kbyte area
from the address H’0080 0000 to the address H’0081 FFFF. The other areas here are ghosts in 128-Kbyte units.
(Do not use the ghost area intentionally during programming.)
3.4.1 Internal RAM Area
The internal RAM area is allocated to the addresses shown below.
Table 3.4.1 Internal RAM Allocation Address
Type Name
M32180F8
Size
Allocation Address
48 Kbytes
H’0080 4000 to H’0080 FFFF
3.4.2 SFR (Special Function Register) Area
The addresses H’0080 0000 to H’0080 3FFFF comprise the SFR (Special Function Register) area. Located in
this area are the internal peripheral I/O registers.
H'0080 0000
SFR area
(16 Kbytes)
H'0080 3FFF
H'0080 4000
H'0080 7FFF
H'0080 8000
Internal RAM
(48 Kbytes)
Virtual flash emulation areas
separated in 4-Kbyte units
can be allocated here.
For details, see Section 6.6.
H'0080 FFFF
Figure 3.4.1 Internal RAM and SFR (Special Function Register) Areas of the M32180F8
32180 Group User’s Manual (Rev.1.0)
3-6
RENESAS [ RENESAS TECHNOLOGY CORP ]
