L9963T datasheet(41/45 Pages) STMICROELECTRONICS

41 / 45 page

Contents

Block diagram and pin description .................................................2

1.1

Block diagram ................................................................. 2

1.2

Pin description ................................................................. 2

Product electrical and thermal ratings..............................................5

2.1

Supply ranges ................................................................. 5

2.2

Operating range ............................................................... 5

2.3

Absolute maximum rating........................................................ 6

2.4

ESD protection ................................................................ 6

2.5

Temperature ranges and thermal data ............................................. 6

2.6

Power mangement ............................................................. 7

Functional description .............................................................9

3.1

Internal oscillators .............................................................. 9

3.2

Pin configuration ............................................................... 9

3.2.1

Digital I/Os ............................................................. 9

3.2.2

Analog input ........................................................... 17

3.3

Device functional states ........................................................ 20

3.3.1

L9963T FSM ........................................................... 20

3.3.2

Reset state ............................................................ 22

3.3.3

Stand-by state.......................................................... 22

3.3.4

Regulators enabling state ................................................. 22

3.3.5

Trimming and config latch ................................................. 23

3.3.6

Normal state ........................................................... 23

3.3.7

Regulators disabling state ................................................. 23

3.3.8

Electrical parameters - FSM ............................................... 24

3.4

Serial communication interface .................................................. 24

3.4.1

Frame input/output management ........................................... 24

3.4.2

Communication parameters ............................................... 25

3.4.3

Serial Peripheral Interface (SPI) ............................................ 26

3.4.4

Isolated Serial Peripheral Interface ......................................... 28

3.5

Safety and diagnostic features .................................................. 30

L9963T

Contents

DS13590 - Rev 4

page 41/45

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