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L9679E Datasheet(PDF) 112 Page - STMicroelectronics

Part # L9679E
Description  Automotive battery cut-off circuit and airbag system expansion IC
PDF  127 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679E Datasheet(HTML) 112 Page - STMicroelectronics

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Symbol
Parameter
Comments / Conditions
Min
Typ
Max Unit
T_s2_end_open
Slot 2 End valid
window, opening time
Related to t0, Sensor Side, P10P-500-4H
177.5
-
205
μs
T_s2_end_closure
Slot 2 End valid
window, closure time
Related to t0, Sensor Side, P8P-500-3L
302.8
-
342.1
μs
Related to t0, Sensor Side, P8P-500-3H
271.6
-
308.0
μs
Related to t0, Sensor Side, P8P-500-4H
225.4
-
256.5
μs
Related to t0, Sensor Side, P10P-500-3L
319.6
-
360.5
μs
Related to t0, Sensor Side, P10P-500-3H
282.7
-
320.0
μs
Related to t0, Sensor Side, P10P-500-4H
236.5
-
269.0
μs
T_s3_end_open
Slot 3 End valid
window, opening time
Related to t0, Sensor Side, P8P-500-3L
365.1
-
412.5
μs
Related to t0, Sensor Side, P8P-500-3H
339.4
-
384.3
μs
Related to t0, Sensor Side, P8P-500-4H
263.9
-
300.9
μs
Related to t0, Sensor Side, P10P-500-3L
378.9
-
427.7
μs
Related to t0, Sensor Side, P10P-500-3H
348.5
-
394.3
μs
Related to t0, Sensor Side, P10P-500-4H
273.0
-
311
μs
T_s3_end_closure
Slot 3 End valid
window, closure time
Related to t0, Sensor Side, P8P-500-3L
465.9
-
522.7
μs
Related to t0, Sensor Side, P8P-500-3H
434.7
-
488.0
μs
Related to t0, Sensor Side, P8P-500-4H
342.5
-
386.1
μs
Related to t0, Sensor Side, P10P-500-3L
482.7
-
541.1
μs
Related to t0, Sensor Side, P10P-500-3H
445.9
-
500.0
μs
Related to t0, Sensor Side, P10P-500-4H
353.7
-
398.2
μs
TSYNC_DLY_SHORT
Sync pulse start delay
SYS_CFG(RSU_SYNCPULSE_SHIFT_CONF)=1 Related
to digital command that starts Sync Pulse on ch. N-1
-
160/
FOSC(typ)
-
μs
TSYNC_DLY_LONG
Sync pulse start delay
SYS_CFG(RSU_SYNCPULSE_SHIFT_CONF)=0 Related
to digital command that starts Sync Pulse on ch. N-1
-
288/
FOSC(typ)
-
μs
TFLT_OPEN_RSU
Open detection
deglitch filter time
-
10
-
15
µs
TFLT_LKG_RSU
Leakage deglitch filter
time
-
10
-
15
µs
TWRITE_EN_DELAY_LF
Data register write
delay
Design info
F = 125 kbaud
Calculated from transition of last sensor data bit to when
data is available in SPI register
9
-
19
µs
TWRITE_EN_DELAY_HF
Data register write
delay
Design info
F = 189 kbaud
Calculated from transition of last sensor data bit to when
data is available in SPI register
6
-
14
µs
L9679E
Electrical characteristics
DS12485 - Rev 8
page 112/127



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