topic Re: Open drain & Use of pull up resistor in i2c. in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Open-drain-Use-of-pull-up-resistor-in-i2c/m-p/515969#M1429 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mc on Fri Sep 26 09:00:00 MST 2014</STRONG><BR /><SPAN>Hi Jay,</SPAN><BR /><SPAN>I suggest you to read below links.</SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.i2c-bus.org%2Fhow-i2c-hardware-works%2F" rel="nofollow" target="_blank">http://www.i2c-bus.org/how-i2c-hardware-works/</A></SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.i2c-bus.org%2Ftermination-versus-capacitance%2F" rel="nofollow" target="_blank">http://www.i2c-bus.org/termination-versus-capacitance/</A></SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FOpen_collector" rel="nofollow" target="_blank">http://en.wikipedia.org/wiki/Open_collector</A></SPAN><BR /><BR /><SPAN>And for more detail study check i2C the specifications doc at</SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.nxp.com%2Fdocuments%2Fuser_manual%2FUM10204.pdf" rel="nofollow" target="_blank">http://www.nxp.com/documents/user_manual/UM10204.pdf</A></SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:20:56 GMT lpcware 2016-06-15T17:20:56Z Open drain & Use of pull up resistor in i2c. https://community.nxp.com/t5/LPC-Microcontrollers/Open-drain-Use-of-pull-up-resistor-in-i2c/m-p/515968#M1428 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jayudhandha on Thu Sep 25 22:23:13 MST 2014</STRONG><BR /><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I am not able to understand the use of pull up resistor in i2c. I am using LPC 1769 ,icrocontroller.</SPAN><BR /><SPAN>And what is open drain? </SPAN><BR /><BR /><SPAN>Regards.. :-)</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:20:55 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Open-drain-Use-of-pull-up-resistor-in-i2c/m-p/515968#M1428 lpcware 2016-06-15T17:20:55Z Re: Open drain & Use of pull up resistor in i2c. https://community.nxp.com/t5/LPC-Microcontrollers/Open-drain-Use-of-pull-up-resistor-in-i2c/m-p/515969#M1429 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mc on Fri Sep 26 09:00:00 MST 2014</STRONG><BR /><SPAN>Hi Jay,</SPAN><BR /><SPAN>I suggest you to read below links.</SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.i2c-bus.org%2Fhow-i2c-hardware-works%2F" rel="nofollow" target="_blank">http://www.i2c-bus.org/how-i2c-hardware-works/</A></SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.i2c-bus.org%2Ftermination-versus-capacitance%2F" rel="nofollow" target="_blank">http://www.i2c-bus.org/termination-versus-capacitance/</A></SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FOpen_collector" rel="nofollow" target="_blank">http://en.wikipedia.org/wiki/Open_collector</A></SPAN><BR /><BR /><SPAN>And for more detail study check i2C the specifications doc at</SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.nxp.com%2Fdocuments%2Fuser_manual%2FUM10204.pdf" rel="nofollow" target="_blank">http://www.nxp.com/documents/user_manual/UM10204.pdf</A></SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:20:56 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Open-drain-Use-of-pull-up-resistor-in-i2c/m-p/515969#M1429 lpcware 2016-06-15T17:20:56Z