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L9788 데이터시트(PDF) 33 Page - STMicroelectronics

부품명 L9788
상세설명  Multifunction IC for automotive engine management system
PDF  264 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9788 데이터시트(HTML) 33 Page - STMicroelectronics

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DS12308 Rev 4
33/264
L9788
Operation behavior
263
Figure 5. Timing for Wake Up Timer - driver by MSC start/stop commands
Figure 6. Timing for Wake Up Timer - activated (started) by KEY negative edge
Reset condition
VB_STBY under voltage stops (not reset) EOT counter during cranking. The counter is reset
in case of power on reset generated on VB_STBY supply.
GADG2411161534PS
counter start(1) stop(0)
VB_STBY_UV=READ13.FRAME2[0]
Power on reset on VB_STBY
WAKE_UP_EOT_DET
WakeUpTimer COUNT_VALUE
WAKE_UP_TIMER_SET
h00000
h00001
POWER_UP
END COUNTING
MSC read and clear
VB_STBY_UV
POWER_ON
POWER_DOWN
(MSC)
WAKE_UP_EOT_DET_RST
GADG2411161545PS
Full scale
KEY
set
configuration
“START by
Command”
readout
counter
value
command
start
counter
ECU sleep
ECU sleep
ECU sleep
Configuration “Start by Key Signal”
Configuration “Start by Command”
EOT counter value
MSC communication
CSN
t
t
t



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