CHAPTER 23 LOW-VOLTAGE DETECTOR
User’s Manual U16899EJ2V0UD
412
Figure 23-4. Timing of Low-Voltage Detector Internal Reset Signal Generation
Supply voltage (V
DD
)
LVI detection voltage
(V
LVI
)
POC detection voltage
(V
POC
)
<2>
Time
LVIMK flag
(set by software)
LVIF flag
LVIRF flag
Note 3
Note 2
LVI reset signal
POC reset signal
Internal reset signal
Cleared by
software
Not cleared
Not cleared
Not cleared
Not cleared
Cleared by
software
<5>
<6>
Clear
Clear
Clear
<4> 0.2 ms or longer
LVION flag
(set by software)
LVIMD flag
(set by software)
H
<1>
Note 1
<3>
Notes 1. The LVIMK flag is set to “1” by RESET input.
2. The LVIF flag may be set (1).
3. LVIRF is bit 0 of the reset control flag register (RESF). For details of RESF, see CHAPTER 20
RESET FUNCTION.
Remark <1> to <6> in Figure 23-4 above correspond to <1> to <6> in the description of “when starting operation”
in 23.4 (1) When used as reset.
Содержание MuPD78F0132H
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