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

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CHAPTER 5 CPU ARCHITECTURE
Figure 5-13. Data Memory Addressing ( µ PD78055, 78055Y)
0000H
General Registers
32 × 8 bits
Internal ROM
40960 × 8 bits
Internal Buffer RAM
32 × 8 bits
External Memory
23168 × 8 bits
Reserved
A000H
9FFFH
FA80H
FA7FH
FAC0H
FABFH
FAE0H
FADFH
FEE0H
FEDFH
FF00H
FEFFH
FFFFH
Internal High-speed RAM
1024 × 8 bits
Reserved
FB00H
FAFFH
FF20H
FF1FH
FE20H
FE1FH
Special Function
Registers (SFRs)
256 × 8 bits
SFR Addressing
Register Addressing
Short Direct
Addressing
Direct Addressing
Register Indirect
Addressing
Based Addressing
Based Indexed
Addressing