Fujitsu FR81S User Manual
CHAPTER 3: CPU
7. Addressing
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : CPU
FUJITSU SEMICONDUCTOR CONFIDENTIAL
15
7. Addressing
This section explains addressing of the CPU.
A memory space is 32-bit linear.
The CPU manages the address space in 32 bytes. Specify a value of 32-bit for the address on the address
space to access from the CPU. Figure 7-1 shows the address space.
Figure 7-1 Memory Map
0x0000 0000
Byte
data
data
Direct addressing
area
0x0000 0100
Half-word data
0x0000 0200
Word data
0x0000 0400
20-bit
Addressing area
--
--
TBR
0x000F FC00
Vector table
0x0010 0000
32-bit
Addressing area
--
--
0xFFFF FFFF
The address space is also called memory space. The address space is the CPU-based logical address space.
Address conversion is not performed. The CPU-based logical address is same as the physical address where
memory and I/O are actually located.
For details, see "FR Family FR81 32-bit Microcontroller Programming Manual".
MB91520 Series
MN705-00010-1v0-E
112