HD6433682 ETC, HD6433682 Datasheet - Page 374

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

Table 20.1 LVDCR Settings and Select Functions
Legend
20.2.2
LVDSR indicates whether the power-supply voltage falls below or rises above the respective
specified values.
Note:
Rev. 3.00, 05/03, page 344 of 472
LVDE
0
1
1
1
1
Bit
7 to 2
1
0
* Initialized by LVDR.
Low-Voltage-Detection Status Register (LVDSR)
LVDSEL
*
1
0
0
0
Bit Name
LVDDF
LVDUF
*
means invalid.
LVDCR Settings
LVDRE LVDDE
*
1
0
0
1
Initial
Value
All 1
0*
0*
*
0
1
1
1
R/W
R/W
R/W
LVDUE
*
0
0
1
1
Description
Reserved
These bits are always read as 1, and cannot be modified.
LVD Power-Supply Voltage Fall Flag
[Setting condition]
When the power-supply voltage falls below Vint (D) (typ.
= 3.7 V)
[Clearing condition]
Writing 0 to this bit after reading it as 1
LVD Power-Supply Voltage Rise Flag
[Setting condition]
When the power supply voltage falls below Vint (D) while
the LVDUE bit in LVDCR is set to 1, then rises above Vint
(U) (typ. = 4.0 V) before falling below Vreset1 (typ. = 2.3
V)
[Clearing condition]
Writing 0 to this bit after reading it as 1
Power-On
Reset
O
O
O
O
O
LVDR
O
O
Select Functions
Low-Voltage-
Detection
Falling
Interrupt
O
O
O
Low-Voltage-
Detection
Rising
Interrupt
O
O