topic MFRC522 NRSTPD in NFC

topic MFRC522 NRSTPD in NFC https://community.nxp.com/t5/NFC/MFRC522-NRSTPD/m-p/660824#M1925 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>I do not have a free I/O pin for NRSTPD on my host interface.</P><P>Can I leave it open (prefered) or connect to 3.3V ? What are the consequences?</P><P>Best regards</P><P>Thomas</P></BODY></HTML> Fri, 09 Dec 2016 09:55:58 GMT tjf 2016-12-09T09:55:58Z MFRC522 NRSTPD https://community.nxp.com/t5/NFC/MFRC522-NRSTPD/m-p/660824#M1925 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>I do not have a free I/O pin for NRSTPD on my host interface.</P><P>Can I leave it open (prefered) or connect to 3.3V ? What are the consequences?</P><P>Best regards</P><P>Thomas</P></BODY></HTML> Fri, 09 Dec 2016 09:55:58 GMT https://community.nxp.com/t5/NFC/MFRC522-NRSTPD/m-p/660824#M1925 tjf 2016-12-09T09:55:58Z Re: MFRC522 NRSTPD https://community.nxp.com/t5/NFC/MFRC522-NRSTPD/m-p/660825#M1926 <HTML><HEAD></HEAD><BODY><P>Hello <A _jive_internal="true" data-content-finding="Community" data-userid="291770" data-username="tjf" href="https://community.nxp.com/people/tjf">Thomas</A>,</P><P>    The pin should be pulled up to HIGH, because LOW means power down. like this:</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/11072i2F009424FE64B198/image-size/large?v=v2&px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>Best Regards,</P><P>Weidong</P></BODY></HTML> Wed, 14 Dec 2016 06:58:09 GMT https://community.nxp.com/t5/NFC/MFRC522-NRSTPD/m-p/660825#M1926 weidong_sun 2016-12-14T06:58:09Z