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L9679E 데이터시트(PDF) 28 Page - STMicroelectronics

부품명 L9679E
상세설명  Automotive battery cut-off circuit and airbag system expansion IC
PDF  127 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679E 데이터시트(HTML) 28 Page - STMicroelectronics

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SYS_CFG
System configuration register
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MISO
0
0
0
0
0
0
0
0
VMEAS
0
0
0
0
ID:
01
Type:
R/W
Read:
0100
Write:
0002
POR
WSM
SSM
[15]
0
0
0
EN_AUTO_SWITCH_OFF: Enable auto switch off ISRC current source and DCS regulator after
measurement completion
0: Auto switch off disabled
1: Auto switch off enabled
[10]
0
0
0
HI_LEV_DIAG_TIME: Selection of duration of high level squib/pyroswitch diagnostics
0: Short time (see high level diag diagram)
1: Long time (see high level diag diagram)
[9]
0
0
0
RSU_SYNCPULSE_SHIFT_CONF: Selection of sync pulses shift duration
0 Long time
1 Short time
[8:7]
00
00
00
SQMEAS: Sample number in squib/pyroswitch measurement and temperature conversions:
Updated by SSM_RESET or SPI write
00: 8 samples
01: 16 samples
10: 4 samples
11: 2 sample
L9679E
SPI interface
DS12485 - Rev 8
page 28/127



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