Memory Space - Fujitsu FR60 Hardware Manual

CHAPTER 3 CPU AND CONTROL UNITS
3.1

Memory Space

FR family microcontrollers have a logical address space of 4 GB (2
CPU accesses this space linearly.
■ Direct Addressing Area
The areas in the address space listed below are used for input-output.
These areas called the direct addressing area. The address of an operand can be directly specified in an
instruction.
The size of the direct addressing area varies according to the size of data to be accessed:
• Byte data access: 000
• Halfword data access: 000
• Word data access: 000
■ Memory Map
Figure 3.1-1 to Figure 3.1-4 show the memory spaces of FR family microcontrollers.
Figure 3.1-1 MB91F355A, MB91355A, MB91F353A, MB91353A and MB95F357B Memory Maps
0000 0000
0000 0400
0001 0000
0003 E000
0004 0000
0004 4000
0005 0000
0008 0000
0010 0000
FFFF FFFF
46
to 0FF
H H
to 1FF
H H
to 3FF
H H
Internal ROM
Single-chip mode external bus mode
H
I/O
H
I/O
H
Access not
Access not
allowed
allowed
H Internal
Internal
RAM (8 KB)
RAM (8 KB)
(Instruction) (Instruction)
H Internal
Internal
RAM (16 KB)
RAM (16 KB)
(Data)
Access not
H
Access not allowed
allowed
H
External area
H
Internal ROM Internal ROM
(512 KB)
H
Access not
External area
allowed
H
External ROM
external bus mode
I/O I/O
I/O I/O
Access not
allowed
Internal
RAM (8 KB)
(Instruction)
Internal
RAM (16 KB)
(Data)
(Data)
Access not
allowed
External area
(512 KB)
32
addresses). The
Direct addressing area
Reference to I/O map