SPSB0813 datasheet(128/135 Pages) STMICROELECTRONICS

128 / 135 page

Contents

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

1.1

Block diagram ................................................................. 3

1.2

Pin description ................................................................. 5

Maximum ratings ..................................................................7

2.1

Operating range ............................................................... 7

2.1.1

Supply voltage ranges..................................................... 7

2.2

Absolute maximum ratings....................................................... 7

2.3

Temperature ranges and thermal data ............................................ 10

Functional description ............................................................12

3.1

Supply Vs, Vsreg............................................................... 12

3.2

Voltage regulators ............................................................. 12

3.2.1

Voltage regulator: V1..................................................... 12

3.2.2

Voltage regulator: V2..................................................... 13

3.2.3

Voltage regulator failure .................................................. 13

3.2.4

Short to ground detection ................................................. 13

3.2.5

Voltage regulator behavior ................................................ 14

3.3

Operating modes.............................................................. 14

3.3.1

Active mode ........................................................... 14

3.3.2

SW-debug mode ........................................................ 14

3.3.3

V1_standby mode ....................................................... 15

3.3.4

Interrupt .............................................................. 15

3.3.5

VBAT_standby mode .................................................... 16

3.4

Wake-up from standby modes................................................... 16

3.4.1

Wake-up inputs ......................................................... 17

3.5

Functional overview (truth table) ................................................. 18

3.6

Configurable window watchdog.................................................. 20

3.6.1

Change watchdog timing.................................................. 22

3.7

Fail safe mode ................................................................ 22

3.7.1

Temporary failures ...................................................... 22

3.7.2

Non recoverable failures –Forced in VBAT_standby mode ........................ 23

3.8

Reset output (NRESET) ........................................................ 24

3.9

DIAGN output ................................................................ 25

3.10

V1 overvoltage detection ....................................................... 25

3.11

LIN bus interfaces (only for SPSB0815 and SPSB0813) ............................. 27

3.11.1

Features .............................................................. 27

SPSB081

Contents

DS14048 - Rev 1

page 128/135

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