Electronics America 8-Bit Single-Chip Microcontrollers User's Manual

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CHAPTER 5 CPU ARCHITECTURE
5.1 Memory Spaces
Each product of the µ PD78054 and 78054Y Subseries can access the memory space of 64 Kbytes. Figures 5-1
to 5-8 show memory maps.
Figure 5-1. Memory Map (
µ PD78052, 78052Y)
0000H
Data memory
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General Registers
32 × 8 bits
Internal ROM
16384 × 8 bits
3FFFH
1000H
0FFFH
0800H
07FFH
0080H
007FH
0040H
003FH
0000H
CALLF Entry Area
CALLT Table Area
Vector Table Area
Program Area
Program Area
Internal Buffer RAM
32 × 8 bits
External Memory
47744 × 8 bits
Reserved
Program
memory
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4000H
3FFFH
FA80H
FA7FH
FAC0H
FABFH
FAE0H
FADFH
FEE0H
FEDFH
FF00H
FEFFH
FFFFH
Internal High-speed RAM
512 × 8 bits
Special Function
Registers (SFRs)
256 × 8 bits
Reserved
FD00H
FCFFH