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L9788 Folha de dados(PDF) 36 Page - STMicroelectronics

Nome de Peças L9788
Descrição Electrónicos  Multifunction IC for automotive engine management system
PDF  264 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9788 Folha de dados(HTML) 36 Page - STMicroelectronics

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Operation behavior
L9788
36/264
DS12308 Rev 4
Figure 8. Power hold diagram
KEY_IN_DET
WK_IN_DET
WAKE_UP_EOT_DET
WAKE_UP_CAN_DET
CHIP STATUS
PHOLD_EN
MSC_CONFIG_REG1[0]
PHOLD_TIMEOUT
MSC_CONFIG_REG1[2:1]
PHOLD_STATUS
MSC_READ12_FRAME1[0]
PHOLD_COUNTER
(internal counter)
t
POWER HOLD FUNCTION
OFF
OFF
ON
ON
ON
OFF
01
10
timeout
(1)
(2)
(3)
(4)
(5)
(1) The timeout counter is cleared on the detection of at least one of the power up sources.
(2) The timeout counter is cleared if MSC disables the PHOLD function, MRD is switched off, a power down sequence is started.
(4) The PHOLD_EN and the PHOLD_STATUS bits are clear along with the power down sequence.
(5) A new MSC setting for the timeout makes the timeout counter clear and restart.
(2)
(2)
(2)
(4)
(3) The counter has reached the timeout, MRD is switched off, a power down sequence is started.
GADG2411161503PS



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