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L9680 Datasheet(PDF) 259 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) 259 Page - STMicroelectronics

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DocID029257 Rev 1
259/277
L9680
Electrical characteristics
276
Table 62. PSI-5 satellite transceiver - AC specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
1TBit_125k
Bit time (125kbps
mode)
At the sensor connector
7.6
8
8.4
μs
2TBit_189k
Bit time (189kbps
mode)
At the sensor connector
5
5.3
5.6
μs
3TFLT_OCTH_PSI5
Over Current
Detection deglitch
filter time
Normal operation
500
-
600
μs
4
TBLK_OCTH_PSI5
Over Current
Detection
Blanking Time
At interface power on (BLKTxSEL = 0)
4.6
-
5.4
ms
5
At interface power on (BLKTxSEL = 1)
9.4
-
10.8
ms
6TSTBTH
Reverse Battery
Blocking Enable
Time
-12
-
16
μs
7t0
Reference time
@0.5 V on top of V(RSUx)
-
0
-
-
8t1
Start delay time
From t0 to SATSYNC
-3
-
-
μs
9t2
Sync signal
sustain start
@ VRSU+3.8 V relative to t0
--
7
μs
10
SRRISE_RSU
Sync slope rising
slew rate
0.43
-
1.5
V/μs
11
SRFALL_RSU
Sync slope falling
slew rate
-1.5
-
-
V/μs
12
t3
Sync signal
sustain time
Design Info
16
-
-
μs
13
t4
Discharge time
limit
Design Info
-
-
35
μs
14
TBLANK
Decoder blanking
time (decoding
disabled)
Design Info
-
-
42
μs
15
TSYNC
Time between
two
sync pulses
Design Info
400
500
-
μs
16
TFLT_PSI5_HF
PSI5 Deglitch
filter time
F = 189 kbaud
Configurable by SPI (4bits)
1-
2
μs
17
TFLT_PSI5_LF
PSI5 Deglitch
filter time
F = 125 kbaud
Configurable by SPI (4bits)
1.5
-
2.5
μs
18
T_ES_1, T_LS_1
Message start
time, Slot 1
Related to t0, Sensor Side, P8P-500-3L
44
-
58.6
μs
19
Related to t0, Sensor Side, P8P-500-3H
44
-
58.6
μs
20
Related to t0, Sensor Side, P8P-500-4H
44
-
58.6
μs
21
Related to t0, Sensor Side, P10P-500-3L
44
-
58.6
μs
22
Related to t0, Sensor Side, P10P-500-3H
44
-
58.6
μs
23
Related to t0, Sensor Side, P10P-500-4H
44
-
58.6
μs



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