Datasheet
78K0/Ix2 CHAPTER 22 LOW-VOLTAGE DETECTOR
R01UH0010EJ0500 Rev.5.00 633
Feb 28, 2012
(2) Low-voltage detection level select register (LVIS)
This register selects the low-voltage detection level.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
The generation of a reset signal other than an LVI reset clears this register to 00H.
Figure 22-3. Format of Low-Voltage Detection Level Select Register (LVIS)
0
LVIS0
1
LVIS1
2
LVIS2
3
LVIS3
4
0
5
0
6
0
7
0
Symbol
LVIS
A
ddress: FFBFH After reset: 00H
Note
R/W
LVIS3 LVIS2 LVIS1 LVIS0 Detection level
0 0 0 0 VLVI0 (4.22 0.1 V)
0 0 0 1 VLVI1 (4.07 0.1 V)
0 0 1 0 VLVI2 (3.92 0.1 V)
0 0 1 1 VLVI3 (3.76 0.1 V)
0 1 0 0 VLVI4 (3.61 0.1 V)
0 1 0 1 VLVI5 (3.45 0.1 V)
0 1 1 0 VLVI6 (3.30 0.1 V)
0 1 1 1 VLVI7 (3.15 0.1 V)
1 0 0 0 VLVI8 (2.99 0.1 V)
1 0 0 1 VLVI9 (2.84 0.1 V)
Other than above Setting prohibited
Note The reset value changes depending on the reset source.
If the LVIS register is reset by LVI (except reset by LVI default start function), it is not reset but holds the
current value.
The value of this register is reset to “00H” by other resets.
Cautions 1. Be sure to clear bits 4 to 7 to 0.
2. Do not change the value of LVIS during LVI operation.