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參數(shù)資料
| 型號： | MM1095BD |
| 廠商： | MITSUMI ELECTRIC CO LTD |
| 元件分類： | 電源管理 |
| 英文描述： | System Reset (with built-in watchdog 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： | MM1095BD |
MITSUMI
System Reset (with built-in watchdog timer) MM1095
Electrical Characteristics (DC)
(Except where noted otherwise, MM1095A : V
CC
=3.6V, Ta=25°C, MM1095B : V
CC
=5.0V)
Item
Symbol
Measurement conditions
Min.
Typ.
Max.
Units
MM1095A
8
V
CC
input
T
PI
μS
pulse width
MM1095B
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
Notes:
*
1 Monitoring time is the time from the last pulse (negative edge) of the timer clear clock pulse until reset
pulse output. In other words, reset output is output if a clock pulse is not input during this time.
*
2 Reset time means reset pulse width. However, this does not apply to power ON reset.
*
3 Reset hold time is the time from when V
CC
exceeds detection voltage (V
SH
) during power ON reset until
reset release (RESET
*
4 Output delay time is the time from when power supply voltage drops below detection voltage (V
SL
) until
reset (RESEToutput low).
*
5 Voltage range when measuring output rise and fall is 10~90%.
*
6 Watchdog timer monitoring time (T
WD
), watchdog timer reset time (T
WR
) and reset hold time (T
PR
) during
power supply rise can be changed by varying C
T
capacitance. The times are expressed by the following
formulae.
T
WD
C
T
=0.02μF
5
10
15
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
V
CC
output high).
T
PR
(mS) .= 5000 C
T
(μF)
T
WD
(mS) .= 500 C
T
(μF)
T
WR
(mS) .= 100 C
T
(μF)
Example: When C
T
=0.02μF
T
PR
.= 100mS
T
WD
.= 10mS
T
WR
.= 2mS
CK
or
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