STSPIN32G4 datasheet(27/48 Pages) STMICROELECTRONICS

27 / 48 page

•

Shutdown mode: allows to achieve the lowest power consumption. The BOR is not available in Shutdown

mode. No power voltage monitoring is possible in this mode. The device exits Shutdown mode upon external

reset event (NRST pin), IWDG reset event, wakeup event (WKUP pin, configurable rising or falling edge) or

RTC event (alarm, periodic wakeup, timestamp, tamper).

5.3.3

Advanced-control timer (TIM1)

The advanced motor control timers (TIM1) can be seen as a four-phase PWM multiplexed on 8 channels. It has

complementary PWM outputs with programmable inserted deadtimes.

This timer is used to generate the PWM signal for the three half-bridge gate drivers as shown in Table 13.

Table 13. TIM1 channels configuration

MCU I/O

Analog IC inout

TIM1 channel

PE8

INL1

TIM1_CH1N

PE9

INH1

TIM1_CH1

PE10

INL2

TIM1_CH2N

PE11

INH2

TIM1_CH2

PE12

INL3

TIM1_CH3N

PE13

INH3

TIM1_CH3

PE14

READY

TIM1_BKIN2 (optional)

PE15

NFAULT

TIM1_BKIN (optional)

5.4

Standby mode

The STSPIN32G4 provides a standby mode to reduce power consumption, in particular:

•

All the outputs driver forced low (external power switches turned off)

•

All the embedded protections are disabled

•

The buck regulator is disabled

•

The 3.3 V LDO linear regulator is switched off

•

The I2C communication is not available

The device enters into low consumption mode setting the STBY bit. When the STBY bit is set, the device switches

to low consumption mode after tSTBY time. If during this time the WAKE input is high, the device aborts the

standby request clearing the STBY bit.

If the STBY_RDY bit is set the READY pin is tied to ground when the STBY request is asserted via I2C to indicate

the upcoming entry into standby condition. After tSTBY time when the device switches to low consumption mode

the READY pin is released to reduce current consumption.

The device wakes up from standby when the WAKE input goes high. The buck regulator performs a soft-start

ramp and the LDO regulator is turned on when the VCC reaches the VCC(On) threshold voltage. If the STBY_RDY

bit was set before entering standby, then the READY pin is forced low and released with a tWAKE,LDO delay from

VCC > VCC(On) event.

When the device is in low consumption status, the embedded MCU can be supplied through a specifically

designed linear regulator setting the STBY_REG_EN bit. The regulator generates VREGStby supply starting from

the main supply pin VM and is designed to provide a maximum IREG3V3,Stby supply current.

The standby regulator integrates an overcurrent protection that triggers a device reset in case the supply current

exceeds IREGStby,lim. During standby a dedicated voltage monitoring circuit is active on the REG3V3 pin which

triggers a device reset in case the voltage falls below VREG3V3Stby(Off). In case of reset due to overcurrent or

undervoltage, the system restarts from a power-up condition with registers restored to their defaults and both

buck and main LDO regulators enabled.

Note:

If the internal standby regulator is disabled when the device is in standby mode, only the undervoltage protection

on the REG3V3 pin is active.

STSPIN32G4

Standby mode

DS13630 - Rev 1

page 27/48

STSPIN32G4 Datasheet(PDF) 27 Page - STMicroelectronics

STSPIN32G4 Datasheet(HTML) 27 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Datasheet Descarga

Enlace URL