NEC 78014Y Series User Manual page 474

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
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
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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
474
CHAPTER 19 EXTERNAL DEVICE EXPANSION FUNCTION
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
(b) µ PD78012B, 78012BY Memory Map
F F F F H
SFR
F F 0 0 H
F E F F H
Internal High-speed RAM
F D 0 0 H
F C F F H
Reserved
F A E 0 H
FADFH
Buffer RAM
F A C 0 H
F A B F H
Reserved
F A 8 0 H
F A 7 F H
Full-address mode
(when MM2 to MM0 = 111)
8 0 0 0 H
7 F F F H
16 Kbytes expansion mode
(when MM2 to MM0 = 101)
5 0 0 0 H
4 F F F H
4 Kbytes expansion mode
(when MM2 to MM0 = 100)
4 1 0 0 H
4 0 F F H
256 bytes expansion mode
(when MM2 to MM0 = 011)
4 0 0 0 H
3 F F F H
Single-chip mode
0 0 0 0 H