CHAPTER 17 LOW-VOLTAGE DETECTOR
Preliminary User’s Manual U19014EJ1V0UD
443
Figure 17-6. Timing of Low-Voltage Detector Interrupt Signal Generation
(Detects Level of Supply Voltage (V
DD
))
In 2.7 V/1.59 V POC mode (option byte: POCMODE = 1)
Supply voltage (V
DD
)
Time
<1>
Note 1
<7> Cleared by software
LVIMK flag
(set by software)
LVIF flag
INTLVI
LVIIF flag
Internal reset signal
<3>
<5>
<6>
Cleared by software
<4> Wait time
LVION flag
(set by software)
Note 2
Note 2
<2>
LVIMD flag
(set by software)
L
<8>
V
LVI
2.7 V(TYP.)
V
POC
= 1.59 V (TYP.)
Note 2
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).
Remarks 1.
<1> to <8> in Figure 17-6 above correspond to <1> to <8> in the description of “When starting
operation”
in
17.4.2 (1) When detecting level of supply voltage (V
DD
)
.
2.
For
the
µ
PD78F0730, be sure to set the 2.7 V/1.59 V POC mode by using the option byte
(POCMODE = 1).
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