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Preliminary User’s Manual U14581EJ3V0UM00
CHAPTER 3 CPU ARCHITECTURE
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.
Figure 3-1. Memory Map (
µ
PD780851(A))
0000H
Data memory
space
General registers
32
×
8 bits
Internal ROM
32,768
×
8 bits
7FFFH
1000H
0FFFH
0800H
07FFH
0080H
007FH
0040H
003FH
0000H
CALLF entry area
CALLT table area
Vector table area
Program area
Program area
LCD display RAM
20
×
4 bits
Reserved
Program
memory
space
8000H
7FFFH
FA59H
FA58H
FA6DH
FA6CH
FEE0H
FEDFH
FF00H
FEFFH
FFFFH
Internal high-speed RAM
1,024
×
8 bits
Special function
registers (SFRs)
256
×
8 bits
Reserved
FB00H
FAFFH
Reserved
Internal expansion RAM
512
×
8 bits
F800H
F7FFH
F600H
F5FFH
Summary of Contents for mPD780852 Series
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