https://community.nxp.com/t5/Other-NXP-Products/Question-about-TJA1021-SLP-N-PIN-pull-up/m-p/1549104#M15741 <P>1: No problem.</P> <P>2:Yes, you can.</P> <P>3:No problem.</P> Sat, 05 Nov 2022 00:08:09 GMT guoweisun 2022-11-05T00:08:09Z https://community.nxp.com/t5/Other-NXP-Products/Question-about-TJA1021-SLP-N-PIN-pull-up/m-p/1548740#M15739 <P><SPAN>Hi all,</SPAN></P><P>I met something not sure, here is the problems:</P><P>1. do I need to pull up SLP_N pin? I see the official development board pulls up it.</P><P>2. If I pull up SLP_N pin with the voltage powered on earlier than VBAT=12V, will it do harm to the chip?</P><P>Here is the circuit, VDD3V3 will power on ealier than VDD12V</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="YUANYUAN1_0-1667546508241.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/199156iE7F805FDC14ADFAD/image-size/medium?v=v2&amp;px=400" role="button" title="YUANYUAN1_0-1667546508241.png" alt="YUANYUAN1_0-1667546508241.png" /></span></P><P>Best Regards,</P><P>Yuanyuan.</P> Fri, 04 Nov 2022 07:24:09 GMT https://community.nxp.com/t5/Other-NXP-Products/Question-about-TJA1021-SLP-N-PIN-pull-up/m-p/1548740#M15739 YUANYUAN1 2022-11-04T07:24:09Z https://community.nxp.com/t5/Other-NXP-Products/Question-about-TJA1021-SLP-N-PIN-pull-up/m-p/1549104#M15741 <P>1: No problem.</P> <P>2:Yes, you can.</P> <P>3:No problem.</P> Sat, 05 Nov 2022 00:08:09 GMT https://community.nxp.com/t5/Other-NXP-Products/Question-about-TJA1021-SLP-N-PIN-pull-up/m-p/1549104#M15741 guoweisun 2022-11-05T00:08:09Z