How to use internal rtc of stm32fo microcontrollers with out delay in time.

[Bhargav_45]

I have been using internal rtc of stm 32 microcontroller for which i have connected external 32.768khz crystal with out load capacitors i have recording the values since three days and i have observed inaccurate time which is 43 sec faster, i was confused whether to connect load capacitors to crystal to increase the accuracy or not, if needed what is the value to be used.

[waclawek.jan]

Please be more specific: what is "delay in time"?

JW

[Bhargav_45]

Hi,

I have been using internal rtc of stm 32 microcontroller for which i have connected external 32.768khz crystal with out load capacitors i have recording the values since three days and i have observed inaccurate time which is 43 sec faster, i was confused whether to connect load capacitors to crystal to increase the accuracy or not, if needed what is the value to be used.

Bhargav.

[waclawek.jan]

Read AN2867.

Next time, please don't overwrite the initial post; my first answer now does not make any sense... 🙂

JW