CHAPTER 3 CPU ARCHITECTURE
56
User’s Manual U11302EJ4V0UM
Figure 3-7. Data Memory Addressing (
µ
PD780205 and
µ
PD780205A)
0000H
Internal ROM
40960 x 8 bits
Internal high-speed RAM
1024 x 8 bits
Buffer RAM
64 x 8 bits
Reserved
A000H
9FFFH
FFFFH
General-purpose registers
32 x 8 bits
Special-function registers (SFRs)
256 x 8 bits
FB00H
FAFFH
FAC0H
FABFH
FEE0H
FEDFH
FF00H
FEFFH
VFD display RAM
80 x 8 bits
FA80H
FA7FH
FA30H
FA2FH
Reserved
FF20H
FF1FH
Direct addressing
Register indirect addressing
Based addressing
Based indexed addressing
FE20H
FE1FH
SFR addressing
Register addressing
Short direct
addressing