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L9678P Datasheet(PDF) 149 Page - STMicroelectronics

Part # L9678P
Description  Automotive user configurable airbag and battery cut-off IC
PDF  215 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9678P Datasheet(HTML) 149 Page - STMicroelectronics

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 149 / 215 page
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DS11626 Rev 9
149/216
L9678P, L9678P-S
Safing logic
214
Figure 43. Safing engine - combine function flow chart
GAPGPS01648
i=1
Y
Y
N
i= i+2
temp = dataresult[i]
dataresult[i] = temp + dataresult[i+1]
N
D
E
Outputs to COMPARE function:
dataresult[i]
CC[i]
comp[i]
ValCC[i]
& valCC[i+1]
=1?
Y
N
COMBINE
COMB[i]=1?
Y
temp = dataresult[i]
dataresult[i+1] = temp -
dataresult[i+1]
N
COMB[i+1]=1?
i = N?
i = Safing Record index:
1: SR1
2: SR2
3: SR3
4: SR4
N=5 (L9678)
N=9 (L9679)
N=13 (L9680)



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