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參數(shù)資料
| 型號： | MM1099BD |
| 廠商： | MITSUMI ELECTRIC CO LTD |
| 元件分類： | 電源管理 |
| 英文描述： | System Reset (Built-in Watch Dog Timer) |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8 |
| 封裝： | DIP-8 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 171K |
| 代理商： | MM1099BD |
MITSUMI
System Reset (Built-in Watch Dog Timer) MM1099
Electrical Characteristics (AC)
(Except where noted otherwise, MM1096A : V
CC
=3.6V, Ta=25
°
C MM1096B : V
CC
=5.0V)
Notes :
*
1 The "monitoring time" means the time interval from the last pulse of the clock pulses for timer clear
(negative edge) to the output of the reset pulse. If the clock pulse is not input during this time interval, the
reset output will be given.
*
2 The "reset time" is no other than the reset pulse width, except when resetting the POWER ON.
*
3 The "reset hold time" is the time interval from the time point when V
CC
exceeds the detect (V
SH
) at the time
of Power On Reset (Power variation reset) to the reset release (RESET
*
4 The "output delay time" means the time interval from when the supply voltage comes lower than the
detect voltage (V
SL
) to when comes the reset state (RESET
*
5 The voltage range is 10 to 90% when measuring the output rise and fall times.
*
6 By varying the capacitance of C
T
, we can vary the watch dog timer monitoring time (T
WD
), the reset time at
the time of the watch dog timer (T
WR
), and the reset hold time at the time of power source rise (T
PR
). The
variable time can be expressed by the following formulas:
T
PR
(mS) .= 5000 C
T
(μF)
T
WD
(mS) .= 5000 C
T
(μF)
T
WR
(mS) .= 100 C
T
(μF)
Example : When CT=0.02μF
T
PR
.= 100mS
T
WD
.= 100mS
T
WR
.= 2mS
output "HIGH").
output "Low").
Item
Symbol
Measurement conditions
Min.
Typ.
Max.
Units
MM1099A
8
V
CC
input
T
PI
μS
pulse width
MM1099B
8
CK input pulse width
T
CKW
T
CK
3
μS
μS
CK input cycle
20
Watchdog timer
monitoring time
*
1
Reset time for
watchdog timer
*
2
Reset hold time for
power supply rise
*
3
Output delay time from V
CC
*
4
Output rise time
*
5
Output fall time
*
5
T
WD
C
T
=0.02μF
50
100
150
mS
T
WR
C
T
=0.02μF
1
2
3
mS
T
PR
50
100
150
mS
T
PD
t
R
t
F
----------------------------------------------------------------------
pin, R
L
=10k
, C
L
=20pF
2
10
4.0
1.0
μS
μS
μS
----------------------------------------------------------------------
pin, R
L
=10k
, C
L
=20pF
2.0
0.2
----------------------------------------------------------------------
pin, R
L
=10k
, C
L
=20pF
V
CC
3.6V
2.8V
5.0V
4.0V
V
CC
C
T
=0.02μF, V
CC
CK
or
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