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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.
Programming Example
Configuration Registers
CR
Configuration register
| LPDS | 0 | Main voltage regulater used in STOP mode |
| 1 | Low power regulator used in STOP mode | |
| LPUDS | 0 | Low power regulator on if LPDS bit set in STOP mode |
| 1 | Low power regulator in under-drive mode if LPDS bit set in STOP mode | |
| PDDS | 0 | Enter STOP mode when CPU enters deep sleep |
| 1 | Enter STANDBY mode when CPU enters deep sleep | |
| FPDS | 0 | Flash memory not in power down mode in STOP mode |
| 1 | Flash memory in power down mode in STOP mode |