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L9788 Datasheet(PDF) 165 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) 165 Page - STMicroelectronics

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DS12308 Rev 4
165/264
L9788
LIN/K-LINE interface
263
Figure 72. LIN TimeOut function
Figure 73. LIN_TX input structure
GADG1212161201PS
1. LIN Permanent Recessive
LIN_TX
LIN
LIN_RX
LIN_RX
(LIN_ERR)
Status bit
LIN Error
status bit
Even if LIN_TX is set to High, LIN_BUS be kept disable
LIN bus disabled
LIN bus fixed to Dominant
LIN Permanent dominant staus Detect
LIN_RX signal does not follow
within tLIN1 detect
tLIN1
tLIN2
If LIN_RX is continuation of High fixed,
LIN_ERR status bit is not cleared even if a
diagnosis is read by SPI
If LIN_RX is continuation of Low Fixed,
LIN_ERR status bit is not cleared even if a
diagnosis is read by SPI
LIN_ERR status bit is cleared when LIN_TX is
high and after a diagnosis is read by SPI
A status bit is cleared when LIN_RX is high
and after a diagnosis is read by SPI
After LIN_ERR status
Cleared
by MSB
Cleared
by SPI
Read
by SPI
bit is cleared, if LIN_TX
is set to Low, the
dominant output of LIN
Bus will be corried out
normally
continuation and LIN_ERR status bit is not cleared
2. LIN Permanent Dominant
Read
by SPI
Read
by SPI
Read
by SPI
Read
by SPI
Read
by SPI
2
1
1
3
2
4
GADG0912161539PS
V3V3
V3V3
VHIGH
Input structures: cascoding to
sustain battery level
VLOW



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