Other NXP Products中的主题 Re: PCAL6408a power sequence https://community.nxp.com/t5/Other-NXP-Products/PCAL6408a-power-sequence/m-p/758686#M5730 <HTML><HEAD></HEAD><BODY><P>Hi Thomas,</P><P></P><P>There is no power sequence requirement for these two power rails. If I/O interface is not powered then nothing works since core operation is from I/O power (VDDP) and POR circuitry is also off.</P><P></P><P>Best regards,</P><P>Tomas</P></BODY></HTML> Fri, 26 Jan 2018 18:41:52 GMT TomasVaverka 2018-01-26T18:41:52Z PCAL6408a power sequence https://community.nxp.com/t5/Other-NXP-Products/PCAL6408a-power-sequence/m-p/758685#M5729 <HTML><HEAD></HEAD><BODY><P>Are there any known requirements to power sequencing between the 2 power rails of&nbsp;PCAL6408?</P><P></P><P>Thomas</P></BODY></HTML> Thu, 25 Jan 2018 15:27:00 GMT https://community.nxp.com/t5/Other-NXP-Products/PCAL6408a-power-sequence/m-p/758685#M5729 thomaskofoedhan 2018-01-25T15:27:00Z Re: PCAL6408a power sequence https://community.nxp.com/t5/Other-NXP-Products/PCAL6408a-power-sequence/m-p/758686#M5730 <HTML><HEAD></HEAD><BODY><P>Hi Thomas,</P><P></P><P>There is no power sequence requirement for these two power rails. If I/O interface is not powered then nothing works since core operation is from I/O power (VDDP) and POR circuitry is also off.</P><P></P><P>Best regards,</P><P>Tomas</P></BODY></HTML> Fri, 26 Jan 2018 18:41:52 GMT https://community.nxp.com/t5/Other-NXP-Products/PCAL6408a-power-sequence/m-p/758686#M5730 TomasVaverka 2018-01-26T18:41:52Z