please,To reduce internal RTC errors

[HG LEE]

Posted on October 11, 2017 at 04:32

Hello, I am going to use the internal RTC. However, there are a lot of errors when using the internal RTC. I wonder if there is a way to reduce errors.I don't know because I'm a beginner. Thank you for giving me a detailed answer.

[waclawek.jan]

Posted on October 11, 2017 at 10:12

there are a lot of errors when using the internal RTC

What kind of errors?

Which STM32?

JW

[Nesrine M_O]

Posted on October 11, 2017 at 12:25

Hi

qkqhsi159

,

1- What are you using as STM32 product?

2- What are exactly the problems you faced with RTC?

3-Could you please provide more explanation on your case, so that it will be easier to understand the issue?

-Nesrine

[HG LEE]

Posted on October 11, 2017 at 13:09

1-stm32f4007ig using

2.3-I would like to use internal rtc when I can't use external rtc.But I don't know how to hold the internal rtc.

       In short, I wonder if we can reduce the internal rate of internal error rates.

[waclawek.jan]

Posted on October 11, 2017 at 15:12

Read

http://www.st.com/resource/en/application_note/dm00025071.pdf

 

For precise timekeeping, you need to have connected a 32.768kHz crystal to the LSE oscillator pins, LSE enabled, and if you want to maintain time while the whole chip is powered down, you need to have a battery connected to VBAT.

JW