Electronics America 8-Bit Single-Chip Microcontrollers User's Manual

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CHAPTER 22 EXTERNAL DEVICE EXPANSION FUNCTION
Figure 22-1. Memory Map when Using External Device Expansion Function (2/4)
(c) Memory map of
µ PD78P054, 78P058, (d) Memory map of µ PD78P058, 78P058Y
78P058Y when the µ PD78054, 78054Y when the µ PD78055, 78055Y and
and internal PROM are 32 Kbytes internal PROM are 40 Kbytes
FFFFH
SFR
Internal High-Speed RAM
FF00H
FEFFH
FB00H
FAFFH
FAE0H
FADFH
FAC0H
FABFH
FA80H
FA7FH
C000H
BFFFH
0000H
Reserved
Internal Buffer RAM
Reserved
Full-Address Mode
(when MM2-MM0=111)
Single-chip Mode
16-Kbyte Expansion Mode
(when MM2-MM0=101)
9000H
8FFFH
8100H
80FFH
8000H
7FFFH
4-Kbyte Expansion Mode
(when MM2-MM0=100)
256-byte Expansion Mode
(when MM2-MM0=011)
FFFFH
SFR
Internal High-Speed RAM
FF00H
FEFFH
FB00H
FAFFH
FAE0H
FADFH
FAC0H
FABFH
FA80H
FA7FH
E000H
DFFFH
0000H
Reserved
Internal Buffer RAM
Reserved
Full-Address Mode
(when MM2-MM0=111)
Single-chip Mode
16-Kbyte Expansion Mode
(when MM2-MM0=101)
B000H
AFFFH
A100H
A0FFH
A000H
9FFFH
4-Kbyte Expansion Mode
(when MM2-MM0=100)
256-byte Expansion Mode
(when MM2-MM0=011)