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CHAPTER 2 MEMORY SPACE
2.1 CPU Memory Space
All of the data, program, and I/O areas managed by the F
2
MC-8FX CPU are assigned to
the 64 Kbyte memory space of the F
2
MC-8FX CPU. The CPU can access each resource
by indicating its address on the 16-bit address bus.
■ CPU Memory Space
Figure 2.1-1 shows the address configuration of the F
2
MC-8FX memory space.
The I/O area is located close to the least significant address, and the data area is arranged right above it.
The data area can be divided into the register bank, stack and direct areas for each application. In contrast
to the I/O area, the program area is located close to the most significant address. The reset, interrupt reset
vector and vector call instruction tables are arranged in the highest part.
Figure 2.1-1 F
2
MC-8FX Memory Space
I/O
FFFFH
0000H
Program area
Data area