VNF9D5F datasheet(101/108 Pages) STMICROELECTRONICS

101 / 108 page

Contents

Block diagram and pin description .................................................3

Functional description .............................................................5

2.1

Device interfaces............................................................... 5

2.2

State diagrams and operating modes.............................................. 6

Protections .......................................................................12

3.1

Thermal case temperature monitoring and pre-warning.............................. 12

3.2

Junction overtemperature (OT) .................................................. 12

3.3

Power limitation (PL)........................................................... 13

3.4

Overload protection–Output current limitation (ILIMH) ................................ 13

3.5

Electronic harness protection (STi²Fuse) .......................................... 14

3.6

Reverse battery turn-on ........................................................ 20

SPI functional description ........................................................21

4.1

SPI communication ............................................................ 21

4.1.1

Signal description ....................................................... 21

4.1.2

Connecting to the SPI bus................................................. 21

4.1.3

SPI mode ............................................................. 22

4.2

SPI protocol .................................................................. 22

4.2.1

SDI, SDO format ........................................................ 22

4.2.2

Operating code definition ................................................. 23

4.2.3

Special commands ...................................................... 25

4.3

4.3.1

Global status byte description .............................................. 26

4.3.2

RAM ................................................................. 27

4.3.3

ROM ................................................................. 28

4.3.4

SPI modes ............................................................ 29

4.4

Outputs control ............................................................... 30

4.4.1

OTP programming ...................................................... 31

4.4.2

Procedure to turn on the outputs with the direct input DIx ......................... 32

4.4.3

Output switching slopes control............................................. 33

4.5

Control registers .............................................................. 34

OUTCTRCRx .................................................................. 34

OUTCFGRx ................................................................... 35

CHLOFFTCRxx ................................................................ 37

CHLOFFTCR0 ................................................................. 38

CHLOFFTCR 3x ............................................................... 39

VNF9D5F

Contents

DS13946 - Rev 8

page 101/108

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