CHAPTER 17 LOW-VOLTAGE DETECTOR
User’s Manual U17446EJ3V1UD
261
Figure 17-4. Timing of Low-Voltage Detector Internal Reset Signal Generation
<2>
<1>
Note 1
Note 2
<3>
<5>
<6>
H
Supply voltage (V
DD
)
LVI detection voltage
(V
LVI
)
POC detection voltage
(V
POC
)
LVIF flag
LVIRF flag
Note 3
LVI reset signal
POC reset signal
Internal reset signal
LVIMK flag
(set by software)
LVION flag
(set by software)
LVIMD flag
(set by software)
Cleared by
software
Not cleared
Not cleared
Not cleared
Not cleared
Cleared by
software
Time
Clear
Clear
Clear
<4> 0.2 ms or longer
Notes 1.
The LVIMK flag is set to “1” by reset signal generation.
2.
The LVIF flag may be set (1).
3.
LVIRF is bit 0 of the reset control flag register (RESF). For details of RESF, refer to
CHAPTER 15
RESET FUNCTION
.
Remark
<1> to <6> in Figure 17-4 above correspond to <1> to <6> in the description of “when starting operation”
in
17.4 (1) When used as reset
.
Содержание 78K0S/KB1+
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