CHAPTER 22 LOW-VOLTAGE DETECTOR
Preliminary User’s Manual U16315EJ1V0UD
375
Figure 22-4. Timing of Low-Voltage Detector Internal Reset Signal Generation
Supply voltage (V
DD
)
LVI detection voltage
(V
LVI
)
POC detection voltage
(V
POC
)
2.7 V
LVIF flag
LVIRF flag
Note
LVI reset signal
POC reset signal
Internal reset signal
Cleared by
software
Not cleared
Not cleared
Not cleared
Not cleared
Not cleared
Not cleared
Cleared by
software
<2>
<1>
<5>
<7>
<8>
Time
Clear
Clear
Clear
Clear
<3>
<4> 2 ms or longer
<6> 0.2 ms or longer
LVIMK flag
(set by software)
LVIE flag
(set by software)
LVION flag
(set by software)
LVIMD flag
(set by software)
Note
LVIRF is bit 0 of the reset control flag register (RESF). For details of RESF, refer to
CHAPTER 19 RESET
FUNCTION
.
Remark
<1> to <8> in Figure 22-4 above correspond to <1> to <8> in the description of “when starting operation”
in
22.4 (1) When used as reset
.