CHAPTER 3 CPU ARCHITECTURE
Figure 3-8. Data Memory Addressing (µPD789426, 789436)
FFFFH
Special function registers (SFRs)
SFR addressing
256 × 8 bits
FF20H
FF1FH
FF00H
FEFFH
Short direct
addressing
Internal high-speed RAM
512 × 8 bits
FE20H
FE1FH
Direct addressing
FD00H
FCFFH
Register indirect
addressing
Reserved
FA05H
FA04H
Based addressing
LCD display RAM
5 × 4 bits
FA00H
F9FFH
Reserved
4000H
3FFFH
Internal ROM
16384 × 8 bits
0000H
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User’s Manual U15075EJ1V0UM00