Datasheet

78K0/Kx2-L CHAPTER 22 LOW-VOLTAGE DETECTOR
R01UH0028EJ0400 Rev.4.00 687
Sep 27, 2010
Figure 22-10. Timing of Low-Voltage Detector Interrupt Signal Generation
(Bit: LVISEL = 1)
VEXLVI
L
LVIMK flag
(set by software)
LVIF flag
INTLVI
LVIIF flag
LVION flag
(set by software)
LVISEL flag
(set by software)
LVIMD flag
(set by software)
Input voltage from
external input pin (EXLVI)
Time
<1>
Note 1
<8> Cleared by software
<2>
<4>
<6>
Note 2
Note 2
Note 2
<7>
Cleared by software
<5> Wait time
Note 3 Note 3
<3>
Notes 1. The LVIMK flag is set to “1” by reset signal generation.
2. The interrupt request signal (INTLVI) is generated and the LVIF and LVIIF flags may be set (1).
3. If LVI operation is disabled when the input voltage of external input pin (EXLVI) is less than or equal to
the detection voltage (V
EXLVI), an interrupt request signal (INTLVI) is generated and LVIIF may be set to 1.
Remark <1> to <8> in Figure 22-10 above correspond to <1> to <8> in the description of “When starting operation” in
22.4.2 (2) When detecting level of input voltage from external input pin (EXLVI).