Hello everyone, has anyone here used a supercapacitor for RTC backup on STM32 microcontrollers?
I’m curious to know about its reliability in this application.
Thank you!
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Hello everyone, has anyone here used a supercapacitor for RTC backup on STM32 microcontrollers?
I’m curious to know about its reliability in this application.
Thank you!
Hello ,
I suggest using external RTC with coin cell instead of supercap which is not reliable to use it.
Using a supercapacitor for RTC backup on STM32 microcontrollers can be a reliable solution. Supercapacitors are known for their high energy storage and long cycle life, making them suitable for providing backup power to RTC modules.
However, it’s important to consider the specific requirements of your application and choose a supercapacitor with appropriate capacitance and voltage ratings to ensure reliable operation.
Additionally, proper circuit design, such as implementing voltage balancing and charge management, is crucial for maximizing the performance and longevity of the supercapacitor.
Supercaps will be expensive, won’t last longer and serve the purpose of long term backup.
If you are just curious then, of course it is not recommended to use them instead of coin cell.