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L9654 датащи(PDF) 43 Page - STMicroelectronics

номер детали L9654
подробное описание детали  Quad squib driver and dual sensor interface ASIC for safety application
PDF  59 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9654 датащи(HTML) 43 Page - STMicroelectronics

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L9654
Functional description
58
AOUT/Comparator channel select bits (bit D6..4) indicate which channel is being monitored
by AOUT or SBTH, SGTH, VI_TH comparators.
VI_TH threshold status flag (bit D3) indicates the state of VI_TH comparator. VI_TH comparator
monitors the voltage across SQH and SQL pins.
Diagnostic current channel select bits (bit D2..0) indicate which channel is being applied by
the diagnostic current.
4.12.3
Deployment driver status response
Status response is defined as in the following table.
Table 28. MISO status response definition
Bit
State
Description
D15
1
Mode bits
D14
1
D13
0
Always 0
D12
0
DEPEN Negated
1
DEPEN Asserted
D11
0
Don't care
D10
0
Don't care
D9
0
ARM23 Negated
1
ARM23 Asserted
D8
0
ARM01 Negated
1
ARM01 Asserted
D7
0
Don't care
D6
0
Don't care
D5
0
Don't care
D4
0
Don't care
D3
0
No Deployment Event: Channel 3
1
Deploy Status: Channel 3
D0
0
No Deployment Event: Channel 0
1
Deploy Status: Channel 0
DEPEN status flag (bit D12) indicates the state of DEPEN pin.
ARM status flag indicates the state of the respective arming signal, including the pulse
stretch timer. If the pulse stretch timer is initiated by a deployment command, it does not
assert the arming status flag. This flag is de/asserted as soon as the de-glitch timer is
expired.
Deploy status bits (bit D3 through bit D0) report the status of internal deployment. Bit D8 in
the monitor mode command determines which status information device needs to be
reported in D3 through bit D0.



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