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L9679P Datasheet(PDF) 195 Page - STMicroelectronics

Part # L9679P
Description  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  279 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679P Datasheet(HTML) 195 Page - STMicroelectronics

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DS11627 Rev 7
195/279
L9679P
Safing logic
278
Figure 53. Safing engine - Combine function flow chart
COMBINE
GAPGPS02294
4: SR4
3: SR3
2: SR2
1: SR1
i = Safing Record index:
i = Safing Record index:
1: SR1
D
i=1
3: SR3
4: SR4
N=13 (L9680)
Outputs to COMPARE function:
dataresult[i]
CC[i]
comp[i]
N=9 (L9679)
N=5 (L9678)
i = N?
COMB[i+1]=1?
N
dataresult[i+1] = temp - dataresult[i]
temp = dataresult[i+1]
Y
COMB[i]=1?
N
Y
=1?
& valCC[i+1]
ValCC[i]
E
N
dataresult[i] = temp + dataresult[i+1]
temp = dataresult[i]
i= i+2
N
Y
Y



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