NEC switch User Manual
Page 39
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U12978EJ3V0UD
39
Figure 3-4. Data Memory Addressing (
µµµµPD78F9801)
Special function registers (SFR)
256
× 8 bits
Internal high-speed RAM
256
× 8 bits
Flash memory
16,384
× 8 bits
FFFFH
0000H
Direct addressing
Register indirect
addressing
Based addressing
FF00H
FEFFH
FF20H
FF1FH
FE20H
FE1FH
SFR addressing
Short direct
addressing
Reserved
FE00H
FDFFH
4000H
3FFFH