i.MX ProcessorsのトピックPower off sequence. https://community.nxp.com/t5/i-MX-Processors/Power-off-sequence/m-p/395440#M57911 <HTML><HEAD></HEAD><BODY><P>Hi community.</P><P></P><P>Our customer has below question.</P><P>The <SPAN class="hps">iMX6</SPAN> <SPAN class="hps">is not</SPAN> <SPAN class="hps">specified of&nbsp; power </SPAN><SPAN class="hps">off sequence</SPAN>.</P><P></P><P> <SPAN class="hps">Phenomenon</SPAN> <SPAN class="hps">caused</SPAN> <SPAN class="hps">by the discharge <SPAN class="hps">of the</SPAN> <SPAN class="hps">capacitor </SPAN> speed and </SPAN><SPAN class="hps">capacitance </SPAN><SPAN class="hps">connected to</SPAN> <SPAN class="hps">the power supply.</SPAN></P><P><SPAN class="hps">For example,</SPAN> <SPAN class="hps">NVCC_EIM0 ~ 2</SPAN> <SPAN class="hps">is</SPAN> <SPAN class="hps">at</SPAN> <SPAN class="hps">3.3v,</SPAN> <SPAN class="hps">even if</SPAN> <SPAN class="hps">VDDARM_IN</SPAN> <SPAN class="hps">is</SPAN> <SPAN class="hps">like</SPAN> <SPAN class="hps">that</SPAN> <SPAN class="hps">0.5v,</SPAN> <SPAN class="hps">Will it</SPAN> <SPAN class="hps">not be a problem</SPAN>?</P><P></P><P></P><P> <SPAN class="hps">If</SPAN> <SPAN class="hps">POR_B</SPAN> <SPAN class="hps">is negated</SPAN>, W<SPAN class="hps">ould</SPAN> <SPAN class="hps">never</SPAN> <SPAN class="hps">like</SPAN> <SPAN class="hps">that</SPAN>, iMX6 <SPAN class="hps">to malfunction</SPAN> <SPAN class="hps">or failure?</SPAN></P></BODY></HTML> Tue, 25 Aug 2015 10:03:02 GMT takashitakahash 2015-08-25T10:03:02Z Power off sequence. https://community.nxp.com/t5/i-MX-Processors/Power-off-sequence/m-p/395440#M57911 <HTML><HEAD></HEAD><BODY><P>Hi community.</P><P></P><P>Our customer has below question.</P><P>The <SPAN class="hps">iMX6</SPAN> <SPAN class="hps">is not</SPAN> <SPAN class="hps">specified of&nbsp; power </SPAN><SPAN class="hps">off sequence</SPAN>.</P><P></P><P> <SPAN class="hps">Phenomenon</SPAN> <SPAN class="hps">caused</SPAN> <SPAN class="hps">by the discharge <SPAN class="hps">of the</SPAN> <SPAN class="hps">capacitor </SPAN> speed and </SPAN><SPAN class="hps">capacitance </SPAN><SPAN class="hps">connected to</SPAN> <SPAN class="hps">the power supply.</SPAN></P><P><SPAN class="hps">For example,</SPAN> <SPAN class="hps">NVCC_EIM0 ~ 2</SPAN> <SPAN class="hps">is</SPAN> <SPAN class="hps">at</SPAN> <SPAN class="hps">3.3v,</SPAN> <SPAN class="hps">even if</SPAN> <SPAN class="hps">VDDARM_IN</SPAN> <SPAN class="hps">is</SPAN> <SPAN class="hps">like</SPAN> <SPAN class="hps">that</SPAN> <SPAN class="hps">0.5v,</SPAN> <SPAN class="hps">Will it</SPAN> <SPAN class="hps">not be a problem</SPAN>?</P><P></P><P></P><P> <SPAN class="hps">If</SPAN> <SPAN class="hps">POR_B</SPAN> <SPAN class="hps">is negated</SPAN>, W<SPAN class="hps">ould</SPAN> <SPAN class="hps">never</SPAN> <SPAN class="hps">like</SPAN> <SPAN class="hps">that</SPAN>, iMX6 <SPAN class="hps">to malfunction</SPAN> <SPAN class="hps">or failure?</SPAN></P></BODY></HTML> Tue, 25 Aug 2015 10:03:02 GMT https://community.nxp.com/t5/i-MX-Processors/Power-off-sequence/m-p/395440#M57911 takashitakahash 2015-08-25T10:03:02Z Re: Power off sequence. https://community.nxp.com/t5/i-MX-Processors/Power-off-sequence/m-p/395441#M57912 <HTML><HEAD></HEAD><BODY><P>Hi Takashi</P><P></P><P>no problem, as according to sect.4.2.2 Power-Down Sequence</P><P>i.MX6DQ Datasheet (rev.4, 7/2015)</P><P></P><P>No special restrictions for i.MX 6Dual/6Quad SoC.</P><P></P><P><A href="http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf" title="http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf">http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf</A> </P><P></P><P>&gt; <SPAN class="hps">If</SPAN> <SPAN class="hps">POR_B</SPAN> <SPAN class="hps">is negated</SPAN>, W<SPAN class="hps">ould</SPAN> <SPAN class="hps">never</SPAN> <SPAN class="hps">like</SPAN> <SPAN class="hps">that</SPAN>, iMX6 <SPAN class="hps">to malfunction</SPAN> <SPAN class="hps">or failure?</SPAN></P><P><SPAN class="hps"></SPAN></P><P><SPAN class="hps">no problem.</SPAN></P><P></P><P>Best regards</P><P>igor</P><P>-----------------------------------------------------------------------------------------------------------------------</P><P>Note: If this post answers your question, please click the Correct Answer button. Thank you!</P><P>-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 25 Aug 2015 11:26:47 GMT https://community.nxp.com/t5/i-MX-Processors/Power-off-sequence/m-p/395441#M57912 igorpadykov 2015-08-25T11:26:47Z