L9779WD datasheet(34/170 Pages) STMICROELECTRONICS

34 / 170 page

Functional description

L9779WD

34/170

DocID027452 Rev 5

VDD5 over voltage

Interfaces drivers

MSC_act

Internal registers

LB interfaces drivers

LB internal registers

CAN & K-LINE & VRS

Smart reset function

Power-up/down

manager

MRD=ON

VDD5=ON

V3V3=ON

VTRACK1,2=ON

VDD5_OV

VB over voltage

tTBOV1<t<tTBOV

Interfaces drivers

LB interfaces drivers

MSC_act

Internal registers

LB internal registers

CAN & K-LINE & VRS

Smart reset function

Power-up/down

manager

MRD=ON

VDD5=ON

V3V3=ON

VTRACK1,2=ON

OV_RST

VB over voltage

t>tTBOV2

Yes

Internal registers

Interfaces drivers

LB interfaces drivers

LB internal registers

MSC_act

CAN & K-LINE & VRS

Smart reset function

Power-up/down

manager

MRD=ON

VDD5=OFF

V3V3=OFF

VTRACK1,2=OFF

OV_RST

RST driven low

externally

t<THOLD

Yes

Internal registers

Interfaces drivers

MSC_act

CAN & K-LINE & VRS

LB interfaces drivers

LB internal registers

Smart reset function

Power-up/down

manager

Keep state

N/A

RST driven low

externally

t>THOLD

Yes

Internal registers

Interfaces drivers

LB interfaces drivers

LB internal registers

MSC_act

CAN & K-LINE & VRS

Smart reset function

Power-up/down

manager

Keep state

N/A

Table 9. Internal reset (continued)

Event

RST

driven

low

Logic under reset

Logic not reset

Power-up/down

manager output

Information

FLAG

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