STPMIC1 datasheet(133/140 Pages) STMICROELECTRONICS

133 / 140 page

5.2.2

State explanations ...................................................... 49

5.3

POWER_UP, POWER_DOWN sequence ......................................... 50

5.4

Feature description ............................................................ 51

5.4.1

VIN conditions and monitoring ............................................. 51

5.4.2

Turn-ON conditions ..................................................... 52

5.4.3

Turn-OFF conditions and restart_request ..................................... 54

5.4.4

Reset and mask_reset option .............................................. 55

5.4.5

Power control modes (MAIN / ALTERNATE) ................................... 56

5.4.6

Thermal protection ...................................................... 57

5.4.7

Overcurrent protection (OCP) ............................................. 58

5.4.8

BOOST overvoltage protection ............................................. 59

5.4.9

Watchdog feature ....................................................... 59

5.5

Programming ................................................................ 59

5.5.1

I2C interface ........................................................... 59

5.5.2

Non-volatile memory (NVM) ............................................... 60

6.1

User register map ............................................................. 62

6.2

Status registers ............................................................... 69

6.2.1

Turn-ON status register (TURN_ON_SR) ..................................... 69

6.2.2

Turn-OFF status register (TURN_OFF_SR) ................................... 70

6.2.3

Overcurrent protection LDO turn-OFF status register (OCP_LDOS_SR) ............. 71

6.2.4

Overcurrent protection buck turn-OFF status register (OCP_BUCKS_BSW_SR) ....... 72

6.2.5

Restart status register (RESTART_SR)....................................... 73

6.2.6

Version status register (VERSION_SR)....................................... 74

6.3

Control registers .............................................................. 75

6.3.1

Main control register (MAIN_CR) ........................................... 75

6.3.2

Pads pull control register (PADS_PULL_CR) .................................. 76

6.3.3

Bucks pull-down control register (BUCKS_PD_CR) ............................. 77

6.3.4

LDO1-4 pull-down control register (LDO14_PD_CR) ............................ 78

6.3.5

LDO5/6 pull-down control register (LDO56_VREF_PD_CR) ....................... 79

6.3.6

PWR_SWOUT and VIN control register (SW_VIN_CR) .......................... 80

6.3.7

PONKEYn turn-OFF control register (PKEY_TURNOFF_CR)...................... 81

STPMIC1

Contents

DS12792 - Rev 7

page 133/140

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