topic Re: We are facing a drift in RTC of the Processor in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815792#M49453 <HTML><HEAD></HEAD><BODY><P>For more details I am adding RTC Calculation also.</P><TABLE style="width: 473px;"><TBODY><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0.5pt solid windowtext; width: 145px; height: 10px; background-color: #acb9ca;">Crystal Part Number</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);">ABS07-32.768KHZ-7-T</TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 145px; height: 10px; background-color: #acb9ca;">Temperature Coefficient</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);">-0.036 ppm/˚C</TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0px black; width: 145px; height: 10px; background-color: transparent;"></TD><TD style="border: 0px black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 51px;"><TD style="border: 0.5pt solid windowtext; border-image: none; width: 100px; height: 51px; background-color: rgba(0, 0, 0, 0);">S.No.</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 145px; height: 51px; background-color: #a9d08e;">Operating Temerature (˚C)</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 150px; height: 51px; background-color: rgba(0, 0, 0, 0);">Crystal Frequency Error (PPM)</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 110px; height: 51px; background-color: #a9d08e;">Error/Day (Seconds/day)</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-40</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-152.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-13.14144</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">2</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-30</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-108.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-9.40896</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">3</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-20</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-72.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-6.29856</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">4</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-44.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-3.81024</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">0</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-22.5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-1.944</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">6</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-8.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.69984</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">7</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">20</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-0.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.07776</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">8</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">25</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">0</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">0</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">30</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-0.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.07776</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">40</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-8.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.69984</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">11</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">50</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-22.5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-1.944</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">12</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">60</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-44.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-3.81024</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">13</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">70</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-72.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-6.29856</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">14</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">80</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-108.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-9.40896</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">15</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">85</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-129.6</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; width: 110px; height: 25px; background-color: transparent;">-11.19744</TD></TR></TBODY></TABLE></BODY></HTML> Mon, 12 Nov 2018 06:37:34 GMT vikassingh 2018-11-12T06:37:34Z We are facing a drift in RTC of the Processor https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815791#M49452 <HTML><HEAD></HEAD><BODY><P><SPAN style="font-size: 10.0pt; color: black; background: white;">Hi Team, </SPAN></P><P></P><P><SPAN style="font-size: 10.0pt; color: black; background: white;">In processor, "MK70FN1M0VMJ12" we are facing a clock drift in RTC during both Power on and Power off condition. During Power off, a coin battery(CR2032) is used as power source. Also this drift is not constant. It is varying. Operating temperature is within range of 20 deg Celsius to 35 deg Celsius. Maximum drift of 12 seconds per day is observed. I had attached RTC and crystal section of our schematic. Please help us further in resolving this issue. Is compensation register usage solves this issue? Please help as ASAP. <BR /> <BR /> </SPAN></P></BODY></HTML> Thu, 08 Nov 2018 14:30:43 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815791#M49452 vikassingh 2018-11-08T14:30:43Z Re: We are facing a drift in RTC of the Processor https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815792#M49453 <HTML><HEAD></HEAD><BODY><P>For more details I am adding RTC Calculation also.</P><TABLE style="width: 473px;"><TBODY><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0.5pt solid windowtext; width: 145px; height: 10px; background-color: #acb9ca;">Crystal Part Number</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);">ABS07-32.768KHZ-7-T</TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 145px; height: 10px; background-color: #acb9ca;">Temperature Coefficient</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);">-0.036 ppm/˚C</TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 10px;"><TD style="border: 0px black; border-image: none; width: 100px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0px black; width: 145px; height: 10px; background-color: transparent;"></TD><TD style="border: 0px black; width: 150px; height: 10px; background-color: rgba(0, 0, 0, 0);"></TD><TD style="border: 0px black; width: 110px; height: 10px; background-color: transparent;"></TD></TR><TR style="height: 51px;"><TD style="border: 0.5pt solid windowtext; border-image: none; width: 100px; height: 51px; background-color: rgba(0, 0, 0, 0);">S.No.</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 145px; height: 51px; background-color: #a9d08e;">Operating Temerature (˚C)</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 150px; height: 51px; background-color: rgba(0, 0, 0, 0);">Crystal Frequency Error (PPM)</TD><TD style="border-width: 0.5pt 0.5pt 0.5pt 0px; border-style: solid solid solid none; border-color: windowtext windowtext windowtext black; width: 110px; height: 51px; background-color: #a9d08e;">Error/Day (Seconds/day)</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-40</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-152.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-13.14144</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">2</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-30</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-108.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-9.40896</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">3</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-20</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-72.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-6.29856</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">4</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">-10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-44.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-3.81024</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">0</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-22.5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-1.944</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">6</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-8.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.69984</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">7</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">20</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-0.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.07776</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">8</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">25</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">0</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">0</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">30</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-0.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.07776</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">10</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">40</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-8.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-0.69984</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">11</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">50</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-22.5</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-1.944</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">12</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">60</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-44.1</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-3.81024</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">13</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">70</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-72.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-6.29856</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">14</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">80</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-108.9</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 110px; height: 25px; background-color: transparent;">-9.40896</TD></TR><TR style="height: 25px;"><TD style="border-width: 0px 0.5pt 0.5pt; border-style: none solid solid; border-color: black windowtext windowtext; width: 100px; height: 25px; background-color: rgba(0, 0, 0, 0);">15</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 145px; height: 25px; background-color: transparent;">85</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; border-color: black windowtext windowtext black; width: 150px; height: 25px; background-color: rgba(0, 0, 0, 0);">-129.6</TD><TD style="border-width: 0px 0.5pt 0.5pt 0px; border-style: none solid solid none; width: 110px; height: 25px; background-color: transparent;">-11.19744</TD></TR></TBODY></TABLE></BODY></HTML> Mon, 12 Nov 2018 06:37:34 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815792#M49453 vikassingh 2018-11-12T06:37:34Z Re: We are facing a drift in RTC of the Processor https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815793#M49454 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>From K70 reference manual, please refer below RTC crystal circuit design:</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/74996i5026AC9DD273ABE1/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>TWR-K70F120M board also using the same connection:</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_2.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/74782i6241AC456BFBBA0E/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_2.png" alt="pastedImage_2.png" /></span></P><P>About RTC compensation, please refer application note <A href="https://www.nxp.com/docs/en/application-note/AN4949.pdf">AN4949 </A>for the detailed info.</P><P>Wish it helps.</P><P><BR />Have a great day,<BR />Mike</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Mon, 12 Nov 2018 14:19:53 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/We-are-facing-a-drift-in-RTC-of-the-Processor/m-p/815793#M49454 Hui_Ma 2018-11-12T14:19:53Z