STPMIC25 datasheet(137/145 Pages) STMICROELECTRONICS

137 / 145 page

5.1

Functional state machine ....................................................... 36

5.1.1

Transition conditions ..................................................... 38

5.1.2

State explanations ...................................................... 39

5.2

POWER_UP / POWER_DOWN sequence ........................................ 41

5.2.1

OFF and CHECK&LOAD: ................................................. 41

5.2.2

POWER_UP: .......................................................... 41

5.2.3

POWER_ON: .......................................................... 41

5.2.4

POWER_DOWN: ....................................................... 42

5.3

Digital pin description .......................................................... 42

5.3.1

PONKEYn............................................................. 42

5.3.2

WAKEUPn ............................................................ 43

5.3.3

RSTn ................................................................ 43

5.3.4

INTn ................................................................. 43

5.3.5

PWRCTRL1, PWRCTRL2, PWRCTRL3 ..................................... 43

5.4

Feature descriptions ........................................................... 44

5.4.1

VIN monitoring.......................................................... 44

5.4.2

VBUS monitoring ........................................................ 45

5.4.3

Turn-on conditions ...................................................... 45

5.4.4

Turn-off conditions ...................................................... 46

5.4.5

Fail-safe management ................................................... 47

5.4.6

Power control management (PWRCTRLx) .................................... 49

5.4.7

Reset management (RSTn) and mask_reset software option ...................... 53

5.4.8

Thermal protection ...................................................... 54

5.4.9

Overcurrent (OCP) and Hiccup mode ........................................ 55

5.4.10

Watchdog management .................................................. 56

5.5

Programming ................................................................. 57

5.5.1

I²C interface ........................................................... 57

5.5.2

Non-volatile memory (NVM) ............................................... 58

6.1

6.2

Status registers ............................................................... 65

6.2.1

Product ID status register (PRODUCT_ID_SR)................................. 65

6.2.2

Version status register (VERSION_SR)....................................... 66

6.2.3

Turn-on status register (TURN_ON_SR) ...................................... 66

6.2.4

Turn-off status register ................................................... 68

6.2.5

Restart status register (RESTART_SR)....................................... 69

6.2.6

Overcurrent protection status register 1 (OCP_SR1)............................. 70

STPMIC25

Contents

DS14278 - Rev 3

page 137/145

STPMIC25 Datasheet(PDF) 137 Page - STMicroelectronics

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