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L9680 Folha de dados(PDF) 177 Page - STMicroelectronics

Nome de Peças L9680
Descrição Electrónicos  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  286 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Folha de dados(HTML) 177 Page - STMicroelectronics

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DS11615 Rev 7
177/286
L9680
Deployment drivers
285
Figure 38. High level loop diagnostic flow 2
Low level diagnostic is selected (bit 15
of LPDIAGREQ is low) OR an invalid
high level diagnostic is selected OR we
are in DEP_ENABLED state
End of setting time
End of setting time
End of conversion
Store result in ADCRESC
End of conversion
Store result in ADCRESD
Off time elapsed AND new
diagnostic request is
SQUIB/PYROSWITCH
RESISTANCE RANGE test
Resistance test
setting time = 304μs/1200μs
TIP = 0
Resistance range test time elapsed
Latch HSR_HI, HSR_LO flags
TIP = 1
TIP = 1
Enable ISINK
Enable ISRC
BYPASS ISRC on SRx
TIP = 1
Enable VRCM
Enable ISINK
Enable ISRC on SFx
Enable ISINK
TIP = 1
Off time elapsed AND new
diagnostic request is
SQUIB/PYROSWITCH
RESISTANCE measure test
Off time = 24μs
New high level diagnostic request
(bit 15 of LPDIAGREQ is high)
Wait enough time to
be sure that all
currents and voltages
supplies start in OFF state
Resistance range test
setting time = 152μs/600μs
SQUIB/PYROSWITCH
RES RANGE TEST
DIAG_OFF
WAIT_OFF
Resistance test
setting time = 304μs/1200μs
RES MEAS SETTLE2
RES MEAS CONV12
SQUIB/PYROSWITCH
RES MEAS CONV1
SQUIB/PYROSWITCH
SQUIB/PYROSWITCH
RES MEAS SETTLE2
SQUIB/PYROSWITCH



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