Memory Map When Using External Device Expansion Function - NEC PD78052 User Manual

Memory maps when using the external device expansion function are as follows.
Figure 22-1. Memory Map when Using External Device Expansion Function (1/4)
(a) Memory map of PD78P054, 78P058,
78P058Y when the PD78052, 78052Y
and internal PROM are 16 Kbytes
FFFFH
FF00H
FEFFH
Internal High-Speed RAM
FD00H
FCFFH
Reserved
FAE0H
FADFH
Internal Buffer RAM
FAC0H
FABFH
Reserved
FA80H
FA7FH
Full-Address Mode
(when MM2-MM0=111)
8000H
7FFFH
16-Kbyte Expansion Mode
(when MM2-MM0=101)
5000H
4FFFH
4-Kbyte Expansion Mode
(when MM2-MM0=100)
4100H
40FFH
256-byte Expansion Mode
(when MM2-MM0=011)
4000H
3FFFH
Single-chip Mode
0000H
512
CHAPTER 22 EXTERNAL DEVICE EXPANSION FUNCTION
SFR
(b) Memory map of PD78P054, 78P058,
78P058Y when the PD78053, 78053Y
and internal PROM are 24 Kbytes
FFFFH
SFR
FF00H
FEFFH
Internal High-Speed RAM
FB00H
FAFFH
Reserved
FAE0H
FADFH
Internal Buffer RAM
FAC0H
FABFH
Reserved
FA80H
FA7FH
Full-Address Mode
(when MM2-MM0=111)
A000H
9FFFH
16-Kbyte Expansion Mode
(when MM2-MM0=101)
7000H
6FFFH
4-Kbyte Expansion Mode
(when MM2-MM0=100)
6100H
60FFH
256-byte Expansion Mode
(when MM2-MM0=011)
6000H
5FFFH
Single-chip Mode
0000H