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Symbol
7
IMS
RAM2 RAM1 RAM0
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Note
The value of the memory size switching register at reset depends on the model (see Table 22-2).
Part Number
µ PD78001B, 78001BY
µ PD78002B, 78002BY
µ PD78011B, 78011BY
µ PD78012B, 78012BY
496
CHAPTER 22 µ PD78P014, 78P014Y
Figure 22-1. Internal Memory Size Switching Register Format
6
5
4
3
0
ROM3 ROM2 ROM1 ROM0
Table 22-2. Internal Memory Size Switching Register Value at Reset
Value at Reset
82H
64H
42H
44H
2
1
0
Address
FFF0H
ROM3 ROM2 ROM1 ROM0
0
0
0
0
1
Other than above
RAM2 RAM1 RAM0
0
0
0
0
1
1
1
1
Part Number
µ PD78013, 78013Y
µ PD78014, 78014Y
µ PD78P014, 78P014Y
When Reset
R/W
Note
W
Internal ROM
Capacity Selection
0
0
1
4 Kbytes
0
1
0
8 Kbytes
1
0
0
16 Kbytes
1
1
0
24 Kbytes
0
0
0
32 Kbytes
Setting prohibited
Internal High-Speed RAM
Capacity Selection
0
0
768 bytes
0
1
640 bytes
1
0
512 bytes
1
1
384 bytes
0
0
256 bytes
0
1
Setting prohibited
1
0
1024 bytes
1
1
896 bytes
Value at Reset
C6H
C8H
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