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STM32L4P5CE Datasheet(PDF) 31 Page - STMicroelectronics |
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STM32L4P5CE Datasheet(HTML) 31 Page - STMicroelectronics |
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31 / 311 page  DS12903 Rev 2 31/311 STM32L4P5xx Functional overview 64 only the upper 4 Kbytes) can be retained in Standby mode, supplied by the low-power regulator (standby with RAM2 retention mode). The device exits Standby mode when an external reset (NRST pin), an IWDG reset, WKUP pin event (configurable rising or falling edge), or an RTC event occurs (alarm, periodic wakeup, timestamp, tamper) or a failure is detected on LSE (CSS on LSE). The system clock after wakeup is MSI up to 8 MHz. • Shutdown mode The Shutdown mode allows to achieve the lowest power consumption. The internal regulator is switched off so that the VCORE domain is powered off. The PLL, the HSI16, the MSI, the LSI and the HSE oscillators are also switched off. The RTC can remain active (Shutdown mode with RTC, Shutdown mode without RTC). The BOR is not available in Shutdown mode. No power voltage monitoring is possible in this mode, therefore the switch to Backup domain is not supported. SRAM1, SRAM2, SRAM3 and register contents are lost except for registers in the Backup domain. The device exits Shutdown mode when an external reset (NRST pin), a WKUP pin event (configurable rising or falling edge), or an RTC event occurs (alarm, periodic wakeup, timestamp, tamper). The system clock after wakeup is MSI at 4 MHz. |
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