Kinetis Microcontrollers中的主题 KE04　LVD and POR specification https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952074#M54751 <HTML><HEAD></HEAD><BODY><P>Please kindly advise.</P><P></P><P>Table 4. Questions about LVD and POR specification.（Document Number MKE04P80M48SF0 Data Sheet: Technical Data Rev. 4, 07/2016）</P><P><BR />Since LVDRE of PMC_SPMSC1 is 1 by default, I think that low voltage reset is enabled.<BR />PMC_SPMSC2 defaults to 0.<BR />So, does this low voltage reset take place with VLVDL = 0 or VLVW1L?<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Min Typ Max<BR />VLVDL 2.56 2.61 2.66 V<BR />VLVW1L 2.62 2.7 2.78 V<BR />VLVW2L 2.72 2.8 2.88 V<BR />VLVW3L 2.82 2.9 2.98 V<BR />VLVW4L 2.92 3.0 3.08 V</P><P></P><P>Or does the low-voltage reset not work unless it is written to PMC_SPMSC2.LVDV?</P><P></P><P></P><P>jun</P></BODY></HTML> Thu, 05 Sep 2019 08:10:24 GMT jun1 2019-09-05T08:10:24Z KE04　LVD and POR specification https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952074#M54751 <HTML><HEAD></HEAD><BODY><P>Please kindly advise.</P><P></P><P>Table 4. Questions about LVD and POR specification.（Document Number MKE04P80M48SF0 Data Sheet: Technical Data Rev. 4, 07/2016）</P><P><BR />Since LVDRE of PMC_SPMSC1 is 1 by default, I think that low voltage reset is enabled.<BR />PMC_SPMSC2 defaults to 0.<BR />So, does this low voltage reset take place with VLVDL = 0 or VLVW1L?<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Min Typ Max<BR />VLVDL 2.56 2.61 2.66 V<BR />VLVW1L 2.62 2.7 2.78 V<BR />VLVW2L 2.72 2.8 2.88 V<BR />VLVW3L 2.82 2.9 2.98 V<BR />VLVW4L 2.92 3.0 3.08 V</P><P></P><P>Or does the low-voltage reset not work unless it is written to PMC_SPMSC2.LVDV?</P><P></P><P></P><P>jun</P></BODY></HTML> Thu, 05 Sep 2019 08:10:24 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952074#M54751 jun1 2019-09-05T08:10:24Z Re: KE04　LVD and POR specification https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952075#M54752 <HTML><HEAD></HEAD><BODY><P>Hi jun,</P><P>&nbsp;&nbsp; The reset will be take place with VLVDL:</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/83361iCFC46B12959A1294/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>The LVWnL is used to give the warning flag, or trigger the interrupt.</P><P></P><P>Wish it helps you!</P><P>If you still have question about it, please kindly let me know.</P><P>Have a great day,<BR />Kerry</P><P style="min- padding: 0px;">&nbsp;</P><P>-------------------------------------------------------------------------------<BR />Note:<BR />- If this post answers your question, please click the "Mark Correct" button. Thank you!</P><P style="min- padding: 0px;">&nbsp;</P><P>- We are following threads for 7 weeks after the last post, later replies are ignored<BR /> Please open a new thread and refer to the closed one, if you have a related question at a later point in time.<BR />-------------------------------------------------------------------------------</P></BODY></HTML> Thu, 05 Sep 2019 10:13:51 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952075#M54752 kerryzhou 2019-09-05T10:13:51Z Re: KE04　LVD and POR specification https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952076#M54753 <HTML><HEAD></HEAD><BODY><P>thank you for your answer.<BR />It was definitely in the documentation. Thank you for teaching me.</P><P></P><P>　13.2.4 Low-voltage warning (LVW)</P><P></P><P>jun</P></BODY></HTML> Thu, 05 Sep 2019 23:43:14 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952076#M54753 jun1 2019-09-05T23:43:14Z Re: KE04　LVD and POR specification https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952077#M54754 <HTML><HEAD></HEAD><BODY><P>Hi <SPAN class=""><A _jive_internal="true" data-content-finding="Community" data-userid="325820" data-username="jun@cew.co.jp" href="https://community.nxp.com/people/jun@cew.co.jp">jun yamada</A></SPAN>,</P><P>&nbsp; You are welcome.</P><P>&nbsp;&nbsp; Do you have any further question about this topic?</P><P>&nbsp; If yes, please kindly let me know.</P><P>&nbsp; If your question is solved, please help me to mark the correct answer, just to close this case, thank you!</P><P></P><P>Have a great day,<BR />Kerry</P><P style="min- padding: 0px;">&nbsp;</P><P>-------------------------------------------------------------------------------<BR />Note:<BR />- If this post answers your question, please click the "Mark Correct" button. Thank you!</P><P style="min- padding: 0px;">&nbsp;</P><P>- We are following threads for 7 weeks after the last post, later replies are ignored<BR /> Please open a new thread and refer to the closed one, if you have a related question at a later point in time.<BR />-------------------------------------------------------------------------------</P></BODY></HTML> Fri, 06 Sep 2019 02:09:07 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KE04-LVD-and-POR-specification/m-p/952077#M54754 kerryzhou 2019-09-06T02:09:07Z