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3.1 Memory Spaces
The µ PD780852 Subseries can access a 64-Kbyte memory space. Figures 3-1 to 3-3 show memory maps of the
respective devices.
FFFFH
FF00H
FEFFH
FEE0H
FEDFH
FB00H
FAFFH
FA6DH
FA6CH
FA59H
Data memory
FA58H
space
F800H
F7FFH
F600H
F5FFH
8000H
7FFFH
Program
memory
space
0000H
CHAPTER 3 CPU ARCHITECTURE
Figure 3-1. Memory Map ( µ PD780851(A))
Special function
registers (SFRs)
256 × 8 bits
General registers
32 × 8 bits
Internal high-speed RAM
1,024 × 8 bits
Reserved
LCD display RAM
20 × 4 bits
Reserved
Internal expansion RAM
512 × 8 bits
Reserved
Internal ROM
32,768 × 8 bits
Preliminary User's Manual U14581EJ3V0UM00
7FFFH
Program area
1000H
0FFFH
CALLF entry area
0800H
07FFH
Program area
0080H
007FH
CALLT table area
0040H
003FH
Vector table area
0000H
47
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