Datasheet

78K0/Ix2 CHAPTER 13 COMPARATORS
R01UH0010EJ0500 Rev.5.00 418
Feb 28, 2012
Figure 13-7. Format of DA2 Internal Reference Voltage Selection Register (C2RVM)
Address: FF67H After reset: 00H R/W
Symbol 7 6 5 <4> <3> <2> <1> <0>
C2RVM 0 0 0 C2VRS4 C2VRS3 C2VRS2 C2VRS1 C2VRS0
C2VRS4 C2VRS3 C2VRS2 C2VRS1 C2VRS0 Reference voltage level (DA2) setting
0 0 0 0 0
0.05 V (TYP.)
0 0 0 0 1
0.1 V (TYP.)
0 0 0 1 0
0.15 V (TYP.)
0 0 0 1 1
0.2 V (TYP.)
0 0 1 0 0
0.25 V (TYP.)
0 0 1 0 1
0.3 V (TYP.)
0 0 1 1 0
0.35 V (TYP.)
0 0 1 1 1
0.4 V (TYP.)
0 1 0 0 0
0.44 V (TYP.)
0 1 0 0 1
0.49 V (TYP.)
0 1 0 1 0
0.54 V (TYP.)
0 1 0 1 1
0.59 V (TYP.)
0 1 1 0 0
0.64 V (TYP.)
0 1 1 0 1
0.69 V (TYP.)
0 1 1 1 0
0.74 V (TYP.)
0 1 1 1 1
0.79 V (TYP.)
1 0 0 0 0
0.84 V (TYP.)
1 0 0 0 1
0.89 V (TYP.)
1 0 0 1 0
0.94 V (TYP.)
1 0 0 1 1
0.99 V (TYP.)
1 0 1 0 0
1.04 V (TYP.)
1 0 1 0 1
1.09 V (TYP.)
1 0 1 1 0
1.14 V (TYP.)
1 0 1 1 1
1.19 V (TYP.)
1 1 0 0 0
1.23 V (TYP.)
1 1 0 0 1
1.28 V (TYP.)
1 1 0 1 0
1.33 V (TYP.)
1 1 0 1 1
1.38 V (TYP.)
1 1 1 0 0
1.43 V (TYP.)
1 1 1 0 1
1.48 V (TYP.)
1 1 1 1 0
1.53 V (TYP.)
1 1 1 1 1
1.58 V (TYP.)
Caution To change the reference voltage level when the internal reference voltage generation operation is
enabled (CVRE = 1), a voltage stabilization wait time is required. See Figure 13-12 Example of
Procedure for Changing Internal Reference Voltage for the setting method.