STM32F091 RTC accuracy and measure error info.

[ElvisWei]

Hi,

​

I would like to know about the STM32F091's RTC accuracy and frequency error information.

1. Is the RTC accuracy or frequency error factor affected only by crystal?
2. Is the RTC accuracy or frequency error factor affected by MCU itself?
3. Is it any ST document with the related information?

Thanks,

​

Elvis

[Javier1]

https://www.google.com/search?client=firefox-b-d&q=STM32F091+RTC+accuracy+and+measure+error+info.

Check out RM0091

im just googleing youre own questions:

https://www.maximintegrated.com/en/design/technical-documents/app-notes/5/58.html

>Is the RTC accuracy or frequency error factor affected by MCU itself?

the mcu can calibrate the RTC thus modifying the freq error?, not sure is this is what youre asking

[waclawek.jan]

Read AN4759.

JW