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Figure 3-7. Data Memory Addressing ( µ PD780022AS, 780032AS)
FFFFH
Special function
registers (SFRs)
256 × 8 bits
FF20H
FF1FH
FF00H
FEFFH
General-purpose registers
32 × 8 bits
FEE0H
FEDFH
Internal high-speed RAM
512 × 8 bits
FE20H
FE1FH
FD00H
FCFFH
Reserved
4000H
3FFFH
Internal ROM
16384 × 8 bits
0000H
CHAPTER 3 CPU ARCHITECTURE
SFR addressing
Register addressing
Preliminary User's Manual U16035EJ1V0UM
Short direct
addressing
Direct addressing
Register indirect
addressing
Based addressing
Based indexed
addressing
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