Internal Ram Area And Sfr Area; Internal Ram Area; Special Function Register (Sfr) Area - Mitsubishi Electric M32R Series User Manual

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3.4 Internal RAM Area and SFR Area

The 8 Mbyte area at addresses H'0080 0000 to H'00FF FFFF in the user space accommodates the
internal RAM area and Special Function Register (SFR) area. Of this, a 128 Kbytes of address
space from H'0080 0000 to H'0081 FFFF is the area that the user can actually use. All other areas
here comprise a ghost area in units of 128 Kbytes. (When programming, do not use this ghost area
intentionally.)

3.4.1 Internal RAM Area

The internal RAM is located in the area shown below.
Table 3.4.1 Addresses at Which the 32170's Internal ROM is Located
Type Name
MF32170F6
MF32170F4
MF32170F3

3.4.2 Special Function Register (SFR) Area

Addresses H'0080 0000 to H'0080 3FFFF are the Special Function Register (SFR) area. This area
has registers for internal peripheral I/O located in it.
H'0080 0000
H'0080 3FFF
H'0080 4000
H'0080 DFFF
Figure 3.4.1 Internal RAM Area and Special Function Register (SFR) Area of the M32170F6
Size
40 Kbytes
32 Kbytes
SFR area
(16 Kbytes)
Internal RAM
(40 Kbytes)
3-9
ADDRESS SPACE
3.4 Internal ROM/SFR Area
Located address
H'0080 4000 - H'0080 DFFF
H'0080 4000 - H'0080 BFFF
Pseudo-flash emulation
areas separated in units of
8 Kbytes or 4 Kbytes can
be allocated here. For
details, refer to Section 6.7.
Ver.0.10