7721 Datasheet, PDF (38/577 Pages) List of Unclassifed Manufacturers – H Bridge Power Module

CENTRAL PROCESSING UNIT (CPU)
2.3 Access space
2.3 Access space
Figure 2.3.1 shows the M37721’s access space.
By combination of the program counter (PC), which is 16 bits of structure, and the program bank register
(PG), a 16-Mbyte space from addresses 016 to FFFFFF16 can be accessed. For details about access of an
external area, refer to “CHAPTER 3. CONNECTION WITH EXTERNAL DEVICES.”
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.
00000016
00007F16
00008016
00047F16
SFR area
Internal RAM area
001FC016
001FFF16
SFR area
Bank 016
00FFFF16
01000016
02000016
:
:
FE000016
FF000016
FFFFFF16
Bank 116
:
:
Bank FE16
Bank FF16
: Indicates the memory assignment
of the internal areas.
: Indicates that nothing is assigned.
Note : Memory assignment of internal RAM area varies according to the type of microcomputer.
This figure shows the case of the M37721S2BFP.
Refer to “Figure 2.4.1” for the M37721S1BFP.
SFR : Special Function Register
Fig. 2.3.1 M37721’s access space
7721 Group User’s Manual
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