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L9965P Datasheet(PDF) 43 Page - STMicroelectronics

Part # L9965P
Description  Automotive single channel pyro-fuse driver
PDF  104 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9965P Datasheet(HTML) 43 Page - STMicroelectronics

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Table 24. VRCM STB/STG diagnostics
Fault
type
Assertion condition
IC reaction to
assertion
Release condition
IC reaction
to flag
clear
Maskable
LEAK
SINK
LOW
When IPF_PU is
enabled, if the STB
flag is not internally
set after
tVRCM_LEAK_FLT
expired, the
VRCM_STB_FAIL
fault is
acknowledged
The
VRCM_STB_FAIL
flag is set
FAULTN line is
asserted
Diagnostic routine is
stopped at the end of
the leakage current
test step
Cyclic diagnostic
triggers are inhibited
The
VRCM_STB_FAIL
flag can always be
cleared on read
FAULTN
line is
released
Cyclic
diagnostic
triggers are
unmasked
LEAK_EN = 0 masks cyclic
diagnostic trigger (but not the
on-demand one)
LEAK_LOW_FAULTN_MSK
masks fault redirection on
FAULTN pin
LEAK
SOURCE
LOW
When IPR_PD is
enabled, if the STG
flag is not internally
set after
tVRCM_LEAK_FLT
expired, the
VRCM_STG_FAIL
fault is
acknowledged
The
VRCM_STG_FAIL
flag is set
FAULTN line is
asserted
Diagnostic routine is
stopped at the end of
the leakage current
test step
Cyclic diagnostic
triggers are inhibited
The
VRCM_STG_FAIL
flag can always be
cleared on read
FAULTN
line is
released
Cyclic
diagnostic
triggers are
unmasked
LEAK_EN = 0 masks cyclic
diagnostic trigger (but not the
on-demand one)
LEAK_LOW_FAULTN_MSK
masks fault redirection on
FAULTN pin
L9965P
Functional description
DS14702 - Rev 4
page 43/104



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