m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 37
m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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CENTRAL PROCESSING UNIT (CPU)
2.3 Access space
2.3 Access space
The access space of the M37905 is assigned to a 16-Mbyte space from addresses 0
Figure 2.3.1.) Note that only the internal memory can be accessed because the M37905 operates only in
the single-chip mode.
The memory and I/O devices are assigned in the same access space. Accordingly, it is possible to perform
transfer and arithmetic operations using the same instructions, without discrimination of the memory from
I/O devices.
Fig. 2.3.1 M37905’s access space
2-14
Notes 1: When the internal RAM area is followed by an unused area, do not assign a program to
SFR : Special Function Register
FF
2: Do not assign a program to the last 8 bytes of the internal ROM area.
3: The memory assignment of the internal area varies according to the product type.
4: Refer to section “19.1.1 Memory assignment,” about the flash memory version.
0
the last 8 bytes of the internal RAM area.
Refer to section “Appendix 11. Memory assignment of 7905 Group,” or the latest datasheets, catalogs.
16
16
Internal RAM area
Internal ROM area
SFR area
(Note 1)
(Note 2)
7905 Group User’s Manual Rev.1.0
Bank 0
16
: Memory assignment of internal area
: Nothing is assigned.
16
to FFFFFF
16
. (See
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