ST STM32F412 User Manual

Power controller (PWR) RM0402
98/1163 RM0402 Rev 6
Entering Stop mode
The Stop mode is entered according to Section : Entering low-power mode, when the
SLEEPDEEP bit in the Cortex
®
-M4 with FPU System Control register is set.
Refer to Table 21 for details on how to enter the Stop mode.
To further reduce power consumption in Stop mode, the internal voltage regulator can be put
in low-power mode. This is configured by the LPDS bit of the
PWR power control register
(PWR_CR).
If Flash memory programming is ongoing, the Stop mode entry is delayed until the memory
access is finished.
If an access to the APB domain is ongoing, The Stop mode entry is delayed until the APB
access is finished.
Table 20. Stop operating modes
Stop mode MRLV bit LPLV bit FPDS bit LPDS bit Wakeup latency
Normal mode
STOP MR 0 - 0 0 HSI RC startup time
STOP MRFPD 0 - 1 0
HSI RC startup time +
Flash wakeup time from Deep
Power Down mode
STOP LP 0 0 0 1
HSI RC startup time +
regulator wakeup time from LP
mode
STOP LPFPD - 0 1 1
HSI RC startup time +
Flash wakeup time from Deep
Power Down mode +
regulator wakeup time from LP
mode
STOP MRLV 1 - - 0
HSI RC startup time +
Flash wakeup time from Deep
Power Down mode +
Main regulator from low voltage
mode
STOP LPLV-1-1
HSI RC startup time +
Flash wakeup time from Deep
Power Down mode +
regulator wakeup time from Low
Voltage LP mode

ST STM32F412 Specifications

General

Brand	ST
Model	STM32F412
Category	Microcontrollers
Language	English