Datasheet
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.
• V
BAT
functionality is no more available and VBAT pin should be connected to V
DD
.
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 V
CAP_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 No
WLCSP36
Yes
PDR_ON set to VDD
Yes
PDR_ON set to V
SS
(1)
1. An external power supervisor must be used (refer to Section 3.15.2: Internal reset OFF).
LQFP64 Yes No
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