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參數(shù)資料
| 型號： | M5295 |
| 廠商： | Microsemi Corporation |
| 英文描述： | JIGH RELIABILITY CURRENT REGULATOR DIODES |
| 中文描述： | JIGH可靠性電流調(diào)節(jié)二極管 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 116K |
| 代理商： | M5295 |
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3
ELECTRIC
MITSUBISHI
M5295AL/P/FP
MITSUBISHI<Dig.Ana.INTERFACE>
WATCHDOG TIMER
The Vcc rises up to 0.8V,then Reset1 and 2
generate Low output,and Rising up to 4.25V,charge
of C1 begins.
The Vcc rises up to 4.7V,then Reset2 generates
high.
The voltage at TC pin is 2V,then Reset2 generates
high,when 4V,C1 is discharged and Reset1
generates Low.
The voltage at TC pin falls to 2V,then Reset1
generates high unless normal clock signal is entered
to WD pin,Reset1 repeats this operation.
Before the voltage at TC pin reaches 4V,if normal
clock signal is entered to WD pin,Low Reset1 is
canceled.
In the case of entrance of abnormal signal input,
as the waveform of TC pin repeats charge and
discharge of Reset1 alternatively from 2V to 4V,the
Reset1 repeats high and low output operation.
The Vcc falls to 4.6V,then Reset2 generates Low,
this detective voltage has a 100mV hysteresis.
When Vcc goes down to 4.25V(V
TH1
),the status of
TC pin is switched to discharge.When the potentional
at TC pin is detected being V
TH3
(H) or V
TH3
(L),the
status of Reset1 becomes "low".
1
2
5
6
7
,
3
4
,
8
9
10
11
,
OPERATING EXPLANETION
1 2 3
4
5
6
7 8
9 1011
Vcc
TC
VIN
RST1
RST2
VTH2(H)
VTH1
0V
0V
0V
0V
0V
t
WD
t
RST(2)
t
RST
(1)
VTH3(H)
VTH3(L)
VTH2(L)
VTH1
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