Datasheet

Section 20 Power-On Reset and Low-Voltage Detection Circuits (Optional)
Rev. 3.00 Mar. 15, 2006 Page 394 of 526
REJ09B0060-0300
Bit Bit Name
Initial
Value R/W Description
1 LVDDE 0 R/W Voltage-Fall-Interrupt Enable
0: Interrupt on the power-supply voltage falling below
the selected detection level disabled
1: Interrupt on the power-supply voltage falling below
the selected detection level enabled
0 LVDUE 0 R/W Voltage-Rise-Interrupt Enable
0: Interrupt on the power-supply voltage rising above
the selected detection level disabled
1: Interrupt on the power-supply voltage rising above
the selected detection level enabled
Note: * Not initialized by LVDR but initialized by a power-on reset or WDT reset.
Table 20.1 LVDCR Settings and Select Functions
LVDCR Settings Select Functions
LVDE LVDSEL LVDRE LVDDE LVDUE
Power-On
Reset LVDR
Low-Voltage-
Detection
Falling
Interrupt
Low-Voltage-
Detection
Rising
Interrupt
0 * * * * O   
1 1 1 0 0 O O  
1 0 0 1 0 O  O 
1 0 0 1 1 O  O O
1 0 1 1 1 O O O O
[Legend] * means invalid.