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MB91401
MEMORY SPACE
Memory space
The FR family has 4 GByte of logical addresses (2
Direct Addressing Areas
The following address space areas are used as I/O areas.
These areas are called direct addressing areas, in which the address of an operand can be specified directly
during an instruction.
The direct addressing area varies as shown below depending on the size of access data:
byte data access
half word data access
word data access
Memory Map
The memory space of the macro consists of the following areas.
Direct Addressing Areas
30
: 0-0FF
H
: 0-1FF
H
: 0-3FF
H
Refer to I/O Map
32
address) which can be linearly accessed by the CPU.
I/O
I/O
I-bus RAM 4 KB
(and its mirror)
Access disallowed area
D-bus RAM 8 KByte
External area
Prelminary
2004.11.12
0000 0000
H
0000 0400
H
0001 0000
H
0002 0000
H
0003 F800
H
0004 0000
H
FFFF FFFF
H
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