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L9680 Datasheet(PDF) 128 Page - STMicroelectronics

Part # L9680
Description  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  286 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Datasheet(HTML) 128 Page - STMicroelectronics

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SPI interfaces
L9680
128/286
DS11615 Rev 7
7.4.43
Safing algorithm configuration register (SAF_ALGO_CONF)
ID:
66
Type:
R/W
Read:
6600
Write:
00CC
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MOSI
-
X
MISO
0
0
0
0
0
NO_DATA
0
0
0 Event counter no data select
Updated by SSM_RESET or SPI write while in DIAG state
0 Event counter reset to 0 if CC=0 or (ABS value of response > limit
determined by LIM_SELx) and LIM_ENx=1 when SPI read of SAF_CC bit
is performed (end of sample cycle)
1 Event counter decremented by SUB_VAL if CC=0 or (ABS value of
response > limit determined by LIM_SELx) and LIM_ENx=1 when
SPI read of SAF_CC bit is performed (end of sample cycle)
ARMN_TH 0011 0011 0011 Negative event counter threshold to assert arming
Updated by SSM_RESET or SPI write while in DIAG state
0000 Negative event counter disabled
ARMP_TH 0011 0011 0011 Positive event counter threshold to assert arming
Updated by SSM_RESET or SPI write while in DIAG state
0000 Positive event counter disabled
SUB_VAL 011 011 011 Decremental step size of the event counter
Updated by SSM_RESET or SPI write while in DIAG state
ADD_VAL 001 001 001 Incremental step size of the event counter
Updated by SSM_RESET or SPI write while in DIAG state



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