L5965 datasheet(47/73 Pages) STMICROELECTRONICS

Part #	L5965

Description	Power management for automotive vision and radar systems

PDF	73 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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47 / 73 page

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

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

L5965 Datasheet(PDF) 47 Page - STMicroelectronics

L5965 Datasheet(HTML) 47 Page - STMicroelectronics

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