STM32F410RB datasheet(22/142 Pages) STMICROELECTRONICS

22 / 142 page

Functional overview

STM32F410x8/B

22/142

DocID028094 Rev 5

A comprehensive set of power-saving mode allows to design low-power applications.

When the internal reset is OFF, the following integrated features are no longer supported:

•

The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled.

•

The brownout reset (BOR) circuitry must be disabled.

•

The embedded programmable voltage detector (PVD) is disabled.

•

VBAT functionality is no more available and VBAT pin should be connected to VDD.

3.16

Voltage regulator

The regulator has three operating modes:

–

Main regulator mode (MR)

–

Low power regulator (LPR)

–

Power-down

The three power modes configured by software:

•

MR is used in the nominal regulation mode (With different voltage scaling in Run)

In Main regulator mode (MR mode), different voltage scaling are provided to reach the

best compromise between maximum frequency and dynamic power consumption.

•

LPR is used in the Stop modes

The LP regulator mode is configured by software when entering Stop mode.

•

Power-down is used in Standby mode.

The Power-down mode is activated only when entering in Standby mode. The regulator

output is in high impedance and the kernel circuitry is powered down, inducing zero

consumption. The contents of the registers and SRAM are lost.

An external ceramic capacitor should be connected to the VCAP_1 pin.

3.16.1

Internal power supply supervisor availability

Table 4. Regulator ON/OFF and internal power supply supervisor availability

Package

Power supply supervisor ON Power supply supervisor OFF

UFQFPN48

Yes

WLCSP36

Yes

PDR_ON set to VDD

Yes

PDR_ON set to VSS(1)

1. An external power supervisor must be used (refer to Section 3.15.2: Internal reset OFF).

LQFP64

Yes

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