Memory Space - Fujitsu MB90390 Series Hardware Manual

2.2

Memory Space

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An F MC-16LX CPU has a 16-Mbyte memory space. All data program input and output
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managed by the F
accesses the resources by indicating their addresses using a 24-bit address bus.
■ Outline of CPU Memory Space
All I/O, programs and data are located in the 16-megabyte memory space of the F
CPU is able to access each resource through an address indicated by the 24-bit address bus.
Figure 2.2-1 shows a sample relationship between the F
Figure 2.2-1 Sample Relationship between F
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F MC-16LX device
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F MC-16LX
CPU
*1: The size of the built-in ROM differs for each model.
*2: The area accessible by the image differs for each model
(see "CHAPTER27 ROM MIRRORING MODULE").
*3: The size of the built-in RAM differs for each model.
*4: Access is not possible in single-chip mode.
MC-16LX CPU are located in this 16-Mbyte memory space. The CPU
Programs
Data
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EI OS
Interrupts
Peripheral circuits
General-purpose
ports
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MC-16LX system and memory map.
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MC-16LX System and Memory
FFFFFF
Vector table area
H
FFFC00
H
H *1
FF0000
100000
H
External area
010000
H
ROM Mirror area
(FF bank image)
H *2
008000 / 004000
External area
020000
H
H *3
000D00
Data Area
000380
H
General-Purpose Register
000180
H
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EI OS
Descriptor area
000100
H
External area
0000C0
H
Interrupt Control
0000B0
H
Peripheral Function
Control Register Area
000020
H
I/O Port Control
000000
H
CHAPTER 2 CPU
2
MC-16LX CPU. The
ROM area
Program area
*4
*4
RAM area
*4
Register Area
I/O area
Register Area
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