NEC 78K0 Series User Manual page 550

Figure 24-8. Timing of Low-Voltage Detector Interrupt Signal Generation
(Detects Level of Input Voltage from External Input Pin (EXLVI))
Input voltage from
external input pin (EXLVI)
V
EXLVI
LVIMK flag
(set by software)
LVISEL flag
(set by software)
LVION flag
(set by software)
LVIF flag
INTLVI
LVIIF flag
LVIMD flag
(set by software) L
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).
Remark <1> to <8> in Figure 24-8 above correspond to <1> to <8> in the description of "When starting
operation" in 24.4.2 (1) When detecting level of supply voltage (V
550
CHAPTER 24 LOW-VOLTAGE DETECTOR
<1>
Note 1
<7> Cleared by software
<2>
<3>
<4> Wait time
<5>
Note 2
Note 2
<6>
Note 2 Cleared by software
<8>
Preliminary User's Manual U17260EJ3V1UD
).
DD
Time