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S32K144 RTC use  external crystal 32.768KHZ inaccuracy

Question asked by 建宽高 on Sep 18, 2018
Latest reply on Sep 20, 2018 by Daniel Martynek
  • I use the following configuration


first , i config rtc



second ,i config  clk_in pin




third ,i config clk







it is my code 



/* Initialize RTC instance
* - See RTC configuration component for options
RTC_DRV_Init(RTCTIMER1, &rtcTimer1_Config0);
/* Set the time and date */
RTC_DRV_SetTimeDate(RTCTIMER1, &rtcTimer1_StartTime0);

/* Start the RTC counter */


RTC_DRV_GetCurrentTimeDate(RTCTIMER1, &currentTime);




but i  read inaccuracy time,it run fast.....