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L5965 데이터시트(PDF) 47 Page - STMicroelectronics

부품명 L5965
상세설명  Power management for automotive vision and radar systems
PDF  73 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5965 데이터시트(HTML) 47 Page - STMicroelectronics

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6
Device operating mode
L5965 can work in different operative modes according to input/SPI signals, OTP/SPI settings, fault management
and regulators status.
Figure 24. State machine
SHUTDOWN
STANDBY
INIT
RAMPUP
MAIN
SEC
UP
ACTIVE
REC
WKUP pin high
WKUP pin low
Main fail
(main PG=0 &
timer expired)
Main ok
(main PG = 1 before
timer expired)
Power on
Sec up end
SECUP fail<3
INIT ok & main VBAT > Vok
Timer
Main fail
(main PG=0
Or main PGND loss)
INIT nok
VBAT 1>Vpor
& OTP_PrimID!=000
& OTP_DL_END=1
Main fail
(main PG=0
Or main PGND loss)
WKUP pin low
SECUP fail=3
RST fail
(except WD_RST)
OTP
programming
VBAT 1>Vpor
& OTP_PrimID=000
& OTP_DL_END=1
VBAT 1<Vpor
WKUP high >Twk_rec
& REC_CNT* inv(inf_retrial_en)<3
main PGND loss
WD_RST&
WD_REC_en=1
WD fail &
WD_REC_en=0(default)
WKUP pin low
GADG1405181520PS
L5965
Device operating mode
DS12567 - Rev 3
page 47/73



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