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L9680 Datasheet(PDF) 231 Page - STMicroelectronics

Part # L9680
Description  Automotive advanced airbag IC for mid/high end applications
PDF  277 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Datasheet(HTML) 231 Page - STMicroelectronics

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DocID029257 Rev 1
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L9680
Electrical characteristics
276
16.4
Watchdog
All electrical characteristics are valid for the following conditions unless otherwise noted:
-40 °C
 Ta  +95 °C, VIN
GOOD0  VIN  35 V
Table 27. Temporal watchdog timer AC specifications (WD1)
No
Symbol
Parameter
Condition
Min
Typ
Max Unit
1TWDT1_TIMEOUT Temporal watchdog timeout
-
-
-
2.00
ms
-
-
16.3
ms
2TWDT1_RST
Temporal watchdog reset time -
0.9
1.0
1.1
ms
Table 28. Algorithmic watchdog timer DC specifications (WD2)
No
Symbol
Parameter
Condition
Min
Typ Max Unit
1VOH_WD2LCKOUT
WD2LockOut output voltage
ILOAD = -0.5 mA
VCC-0.6
-
VCC
V
2VOL_WD2LCKOUT
ILOAD = 2.0 mA
0
-
0.4
V
Table 29. Algorithmic watchdog timer AC specifications (WD2)
No
Symbol
Parameter
Condition
Min
Typ
Max
Unit
1TWDT2_TIMEOUT
Algorithmic watchdog timeout -
45
50
55
ms
2TWDT2_RST
Algorithmic watchdog reset
time
-
0.9
1.0
1.1
ms
3TRISE_ WD2LCKOUT WD2LockOut rise time
50 pF load, 20%-80%
-
-
1.0
μs
4TFALL_ WD2LCKOUT WD2LockOut fall time
50 pF load, 20%-80%
-
-
1.0
μs
5fWD2_SEED
WD2 Seed Counter Rate
-
-
-
MHz
fosc
512
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