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Nimit Vachhani
Nimit Vachhani
Associate III
August 8, 2025
Question

Is RTC needed on STM32WLE5Cx

  • August 8, 2025
  • 1 reply
  • 381 views

Greetings,

This is my frist time with wireless mcu. I just want to ask whether RTC is required for LORA Sub GHz Phy communication ? 

Any help will be greatful.

1 reply

S
Sarra.S
ST Employee
August 25, 2025

Hello @Nimit Vachhani, 

Yes, the RTC is used for precise timing in LoRa Sub-GHz PHY communication; 

The RTC provides a time base that operates in all power modes, ensuring uninterrupted timing services, and it's critical for maintaining synchronization and efficient power management during communication processes. 

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