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CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U16035EJ1V0UM
Figure 3-7. Data Memory Addressing (
µ
PD780022AS, 780032AS)
0000H
General-purpose registers
32
×
8 bits
Internal ROM
16384
×
8 bits
4000H
3FFFH
FEE0H
FEDFH
FF00H
FEFFH
FFFFH
Internal high-speed RAM
512
×
8 bits
Reserved
FD00H
FCFFH
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