CHAPTER 22 LOW-VOLTAGE DETECTOR
User’s Manual U16896EJ2V0UD
615
(2) Low-voltage detection level selection register (LVIS)
The LVIS register is an 8-bit register that selects the low-voltage detection level.
The LVIS register can be read or written in 8-bit units. If the LVIM.LVION and LVIM.LVIMD bits = 11, however,
the LVIS register cannot be rewritten until the reset signal (LVIRES) is generated.
The LVIS register is reset to 00H by a reset source other than the low-voltage detector. The LVIS register holds
its value when reset is effected by the low-voltage detector.
0
LVIS2
0
0
0
0
1
1
1
LVIS1
0
0
1
1
0
0
1
Other than above
LVIS0
0
1
0
1
0
1
0
4.3 V ±0.2 V
4.1 V ±0.2 V
3.9
V ±0.2 V
3.7
V ±0.2 V
3.5
V ±0.2 V
3.3
V ±0.15 V
3.1
V ±0.15 V
Setting prohibited
LVIS
0
0
0
0
LVIS2
LVIS1
LVIS0
After reset:
00H
Note
R/W
Address:
FFFFF891H
Detection level
Note
The LVIS register holds its value when reset is effected by the low-voltage detector.
Caution Be sure to clear bits 7 to 3 to “0”.
