NEC UPD789026 Series User Manual page 50

FFFFH
Special Function Registers (SFR)
FF20H
FF1FH
FF00H
FEFFH
FE20H
FE1FH
FD00H
FCFFH
3000H
2FFFH
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0000H
50
CHAPTER 3 CPU ARCHITECTURE
Figure 3-8. Data Memory Addressing ( µ µ µ µ PD789025)
256 × 8 bits
Internal High-Speed RAM
512 × 8 bits
Reserved
Internal ROM
12,288 × 8 bits
User's Manual U11919EJ3V0UM00
SFR Addressing
Short Direct
Addressing
Direct Addressing
Register Indirect
Addressing
Based Addressing