topic External RTC in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/External-RTC/m-p/435332#M66617 <HTML><HEAD></HEAD><BODY><P>HI,</P><P></P><P>We are using internal RTC with a crystal of 9pF load capacitance and two 16pF capacitors on i.MX6S processor. The clock is about 2 to 3 seconds lagging behind on every 2 days. How this can be corrected?</P><P></P><P>We are thinking to use external RTC, which will provide clock on I2C lines to processor. Will there be any issue in booting or timing on using external RTC?</P><P></P><P>with regards</P><P>Lalit</P></BODY></HTML> Tue, 24 Nov 2015 07:20:09 GMT lk22 2015-11-24T07:20:09Z External RTC https://community.nxp.com/t5/i-MX-Processors/External-RTC/m-p/435332#M66617 <HTML><HEAD></HEAD><BODY><P>HI,</P><P></P><P>We are using internal RTC with a crystal of 9pF load capacitance and two 16pF capacitors on i.MX6S processor. The clock is about 2 to 3 seconds lagging behind on every 2 days. How this can be corrected?</P><P></P><P>We are thinking to use external RTC, which will provide clock on I2C lines to processor. Will there be any issue in booting or timing on using external RTC?</P><P></P><P>with regards</P><P>Lalit</P></BODY></HTML> Tue, 24 Nov 2015 07:20:09 GMT https://community.nxp.com/t5/i-MX-Processors/External-RTC/m-p/435332#M66617 lk22 2015-11-24T07:20:09Z Re: External RTC https://community.nxp.com/t5/i-MX-Processors/External-RTC/m-p/435333#M66618 <HTML><HEAD></HEAD><BODY><P>Q. How this can be corrected?</P><P></P><P>A. Check the crystal tolerance first.</P><P></P><P>Q. Will there be any issue in booting or timing on using external RTC?</P><P></P><P>A. No, there should be no any issue. You just have to slightly modify the software to load the value of the external RTC to the internal one each boot time.</P><P><BR />Have a great day,<BR />Artur</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Thu, 26 Nov 2015 10:54:37 GMT https://community.nxp.com/t5/i-MX-Processors/External-RTC/m-p/435333#M66618 art 2015-11-26T10:54:37Z