Datasheet

78K0/Ix2 CHAPTER 13 COMPARATORS
R01UH0010EJ0500 Rev.5.00 416
Feb 28, 2012
Figure 13-5. Format of DA0 Internal Reference Voltage Selection Register (C0RVM)
Address: FF63H After reset: 00H R/W
Symbol <7> 6 5 <4> <3> <2> <1> <0>
C0RVM CVRE 0 0 C0VRS4 C0VRS3 C0VRS2 C0VRS1 C0VRS0
CVRE Internal reference voltage generation operation control
0 Stops operation
1 Enables operation
C0VRS4 C0VRS3 C0VRS2 C0VRS1 C0VRS0 Reference voltage level (DA0) 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.