NEC 78011BGC AB8 Series, User Manual

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CHAPTER 19 EXTERNAL DEVICE EXPANSION FUNCTION
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Memory maps when using the external device expansion function are as follows.
Figure 19-1. Memory Map when Using External Device Expansion Function (1/2)
(a)
µ
PD78011B, 78011BY Memory Map (b)
µ
PD78012B, 78012BY Memory Map
SFR
Internal High-speed RAM
Reserved
Buffer RAM
Reserved
Full-address mode
(when MM2 to MM0 = 111)
16 Kbytes expansion mode
(when MM2 to MM0 = 101)
4 Kbytes expansion mode
(when MM2 to MM0 = 100)
256 bytes expansion mode
(when MM2 to MM0 = 011)
Single-chip mode
SFR
Internal High-speed RAM
Reserved
Buffer RAM
Reserved
Full-address mode
(when MM2 to MM0 = 111)
16 Kbytes expansion mode
(when MM2 to MM0 = 101)
4 Kbytes expansion mode
(when MM2 to MM0 = 100)
256 bytes expansion mode
(when MM2 to MM0 = 011)
Single-chip mode
F F F F H
F F 0 0 H
F E F F H
F D 0 0 H
F C F F H
F A E 0 H
FADFH
F A C 0 H
F A B F H
F A 8 0 H
F A 7 F H
6 0 0 0 H
5 F F F H
3 0 0 0 H
2 F F F H
2 1 0 0 H
2 0 F F H
2 0 0 0 H
1 F F F H
0 0 0 0 H
F F F F H
F F 0 0 H
F E F F H
F D 0 0 H
F C F F H
F A E 0 H
FADFH
F A C 0 H
F A B F H
F A 8 0 H
F A 7 F H
8 0 0 0 H
7 F F F H
5 0 0 0 H
4 F F F H
4 1 0 0 H
4 0 F F H
4 0 0 0 H
3 F F F H
0 0 0 0 H