DS3231 RTC

• DS3231 RTC
  Posted by hsynylcn on 28 Apr, 2025 09:11
• Is it normal for the SQW pin of the DS3231 RTC module to not produce a proper square wave?

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• #1 Reply
  Posted by Peabody on 28 Apr, 2025 14:23
• No.  But the SQW output is open drain.  Do you have a pullup resistor on that line?
  
• #2 Reply
  Posted by hsynylcn on 29 Apr, 2025 12:17
• The problem was solved when I added the pull-up resistor. Thank you very much for your help.

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