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L9678P Datasheet(PDF) 55 Page - STMicroelectronics

Part # L9678P
Description  Automotive user configurable airbag IC
PDF  203 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9678P Datasheet(HTML) 55 Page - STMicroelectronics

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DocID029274 Rev 3
55/203
L9678P, L9678P-S
SPI interface
202
5.1.3
System control register (SYS_CTL)
Address:
02
Type:
RW
Buffer:
$0200
Reset:
$0004
19
18
17
16
15
14
13
12
11
10
9876543
210
MOSI
-
XXX
X
XXXX
MISO
0000
-
0
0
0
0
000
VIN_TH_SEL
0
0
0 VIN comparators threshold selector
0 5.5V
1 7.5V
VBATMON_TH_SEL
00
00
00 VBATMON comparators threshold selector
00 6V
01 6.8V
10 8V
11 8.8V
ER_BST_V
0
0
0 ER Boost voltage select
Updated by SSM_RESET or SPI write
0 set 23V boost
1 set 33V boost
ER_CUR_EN
0
0
0 ER charge / discharge control
Updated by SSM_RESET or SPI write
0 ER current source OFF request
1 ER current source ON request
ER_BST_EN
1
1
1 Boost enable
Updated by SSM_RESET or SPI write



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