Memory Map When Using External Bus Interface - NEC 78K0 User Manual

The memory maps when the external bus interface is used are as follows.
Figure 5-1. Memory Map When Using External Bus Interface (1/2)
µ
(a) Memory map of PD780143 and of
when internal ROM (flash memory) size is 24 KB
FFFFH
FF00H
FEFFH
Internal high-speed RAM
FB00H
FAFFH
Reserved
FA20H
FA1FH
Buffer RAM
FA00H
F9FFH
Reserved
F800H
F7FFH
Full-address mode
(when MM2 to MM0 = 111)
A000H
9FFFH
16 KB expansion mode
(when MM2 to MM0 = 101)
7000H
6FFFH
4 KB expansion mode
(when MM2 to MM0 = 100)
6100H
60FFH
256-byte expansion mode
(when MM2 to MM0 = 011)
6000H
5FFFH
Single-chip mode
0000H
130
CHAPTER 5 EXTERNAL BUS INTERFACE
µ
PD78F0148
SFR
User's Manual U15947EJ2V0UD
µ
(b) Memory map of PD780144 and of
when internal ROM (flash memory) size is 32 KB
FFFFH
FF00H
FEFFH
Internal high-speed RAM
FB00H
FAFFH
FA20H
FA1FH
FA00H
F9FFH
F800H
F7FFH
*
(when MM2 to MM0 = 111)
C000H
BFFFH
16 KB expansion mode
(when MM2 to MM0 = 101)
9000H
8FFFH
4 KB expansion mode
(when MM2 to MM0 = 100)
8100H
80FFH
256-byte expansion mode
(when MM2 to MM0 = 011)
8000H
7FFFH
0000H
µ
PD78F0148
SFR
Reserved
Buffer RAM
Reserved
Full-address mode
Single-chip mode