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Power Controller

The STM32F429ZI requires a voltage supply VDD of 1,8..3,6 V to operate.
A linear voltage regulator is used to generate the 1,2 V internally needed for the CPU.

The real time clock, backup registers and backup RAM can be powered by VBAT.

Features

  • Supports 4 modes: RUN, SLEEP, STOP and STANDBY.
  • Main- and low power voltage regulator.
  • Over- / under-drive mode for voltage regulator.
  • Power down mode for FLASH.


1,2 V Domain




Backup Domain




Configuration Registers

CR

Configuration register




LPDS0Main voltage regulater used in STOP mode
1Low power regulator used in STOP mode
LPUDS0Low power regulator on if LPDS bit set in STOP mode
1Low power regulator in under-drive mode if LPDS bit set in STOP mode
PDDS0Enter STOP mode when CPU enters deep sleep
1Enter STANDBY mode when CPU enters deep sleep
FPDS0Flash memory not in power down mode in STOP mode
1Flash memory in power down mode in STOP mode
  • stm32/peripherals/pwr.1456820494.txt.gz
  • Last modified: 2016/03/01 08:21
  • by feur