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L9788 Datasheet(PDF) 217 Page - STMicroelectronics

Part # L9788
Description  Multifunction IC for automotive engine management system
PDF  264 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9788 Datasheet(HTML) 217 Page - STMicroelectronics

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DS12308 Rev 4
217/264
L9788
Micro second channel (MSC) interface
263
EN_Drivers command
The command Enable Drivers sets the bit Drivers_EN to "1" (UPS1 Frame 10 bit D1).
With Drivers_EN =1 all drivers controlled through control register can be activated using the
Data Frame.
After a reset or command Disable Drivers_EN = "0" and all drivers are disabled.
Disable Driver
Main relay Driver ON
Main relay Driver OFF
MRD_OFF_UC command
The Main Relay Driver is switched off for the time required to perform the off diagnosis and
then switched on again. The command can be activated if firstly is unlocked.
W
C0 C1 C2 C3 C4 C5 C6
D0
D1
D2
D3
D4
D5
D6
D7
EN-DRIVERS
0
1
1
0
0
0
1
1
0
0
1
1
0
0
1
W
C0 C1 C2 C3 C4 C5 C6
D0
D1
D2
D3
D4
D5
D6
D7
DISABLE-DRIVERS
0
1
1
0
0
0
1
0
1
1
0
0
1
1
0
W
C0 C1 C2 C3 C4 C5 C6
D0
D1
D2
D3
D4
D5
D6
D7
MRD_ON
0
1
1
0
0
0
1
1
1
0
0
0
1
1
1
W
C0 C1 C2 C3 C4 C5 C6
D0
D1
D2
D3
D4
D5
D6
D7
MRD_OFF
0
1
1
0
0
0
1
0
0
1
1
1
0
0
0
W
C0 C1 C2 C3 C4 C5 C6
D0
D1
D2
D3
D4
D5
D6
D7
MRD_UC
0
1
1
0
0
0
1
1
1
0
1
1
0
1
1



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