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L9660 bảng dữ liệu(PDF) 40 Page - STMicroelectronics

tên linh kiện L9660
Giải thích chi tiết về linh kiện  Quad squib driver ASIC for safety application
PDF  49 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L9660 bảng dữ liệu(HTML) 40 Page - STMicroelectronics

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Functional description
L9660
40/49
DocID024714 Rev 2
SQP bit: Squib Pin to be tested during short to
battery/ground diagnostics
0 = SQBLx pin test
1 = SQBHx pin test
Bits D4
Used to disable IPD on all channels
0 = IPD active as indicated;
– Active for all channels except the one under test when
running Short to Battery/Ground and short between
loops
Diagnostics and LS/HS FET test
– Active for all channels when running Stop Diagnostic,
Resistance Diagnostics, High Squib Resistance
Diagnostics, HSS Diagnostic and VRESx Diagnostics
1 = IPD disabled on all channels
Bits D3
AMC Bit
Bit used for resistance measurement amplifier calibration.
Only valid when squib resistance diagnostics is selected,
otherwise this is ignored and a 0 is reported in the
response
0 = No calibration (Normal squib resistance measurements)
1 = Calibration
For bits D2:D0
The following table shall be used for channel selection.
All other combinations for MOSI bits D2:D0 produce an error response of 0xD000.
Note:
Except for short to battery /ground diagnostics and loop to loop test the state of IPD (D4)
does not affect the test.
Table 25. Channel selection
Channel
Bit D2
Bit D1
Bit D0
0
0
0
0
1
0
0
1
2
0
1
0
3
0
1
1



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