VNF1248F datasheet(75/79 Pages) STMICROELECTRONICS

75 / 79 page

11.7

Low current bypass desaturation shutdown........................................ 41

11.8

Current sense undervoltage (shutdown) .......................................... 41

11.9

Reverse battery and loss of ground .............................................. 42

SPI functional description ........................................................43

12.1

SPI communication ............................................................ 43

12.2

Signal description ............................................................. 44

12.3

SPI protocol .................................................................. 44

12.4

Operating code definition ...................................................... 45

12.5

Write mode................................................................... 45

12.6

Read mode .................................................................. 46

12.7

Read and clear status command................................................. 46

12.8

SPI device information ......................................................... 47

12.9

Special commands ............................................................ 47

12.10 Global status byte ............................................................. 48

12.11 RAM memory map ............................................................ 49

12.12 ROM memory map ............................................................ 50

12.13 Control registers .............................................................. 51

12.14 Status registers ............................................................... 55

12.15 Watchdog timeout ............................................................ 60

Functional description ............................................................61

13.1

Operating modes.............................................................. 61

13.2

Power-on state ............................................................... 62

13.3

Standby state................................................................. 62

13.4

Fail-safe state ................................................................ 62

13.5

Unlocked state................................................................ 63

13.6

Locked state ................................................................. 63

13.7

Self-test mode ................................................................ 64

Application information ...........................................................65

Package information..............................................................67

15.1

QFN32L Epad (5.0x5.0x1.0 mm) package information .............................. 67

15.2

QFN32L Epad 5x5 mm packing information ....................................... 69

15.3

QFN32L Epad 5x5 marking information ........................................... 70

Ordering information .............................................................71

Revision history .......................................................................72

VNF1248F

Contents

DS14109 - Rev 7

page 75/79

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