Kinetis MicrocontrollersのトピックGround of float unused RTC pins? https://community.nxp.com/t5/Kinetis-Microcontrollers/Ground-of-float-unused-RTC-pins/m-p/147933#M72 <HTML><HEAD></HEAD><BODY><P>We aren’t going to use the Real Time Clock module in the MK20DX256VLL7. How do I connect the following pins:</P><P></P><P>1) VBAT (pin 30)</P><P>2) XTAL32 (pin 28)</P><P>3) EXTAL32 (pin 29)</P><P></P><P>Do I ground these pins or leave them unconnected? </P><P></P><P><SPAN class="mce_paste_marker"></SPAN></P></BODY></HTML> Tue, 23 Oct 2012 16:50:49 GMT robsouthworth 2012-10-23T16:50:49Z Ground of float unused RTC pins? https://community.nxp.com/t5/Kinetis-Microcontrollers/Ground-of-float-unused-RTC-pins/m-p/147933#M72 <HTML><HEAD></HEAD><BODY><P>We aren’t going to use the Real Time Clock module in the MK20DX256VLL7. How do I connect the following pins:</P><P></P><P>1) VBAT (pin 30)</P><P>2) XTAL32 (pin 28)</P><P>3) EXTAL32 (pin 29)</P><P></P><P>Do I ground these pins or leave them unconnected? </P><P></P><P><SPAN class="mce_paste_marker"></SPAN></P></BODY></HTML> Tue, 23 Oct 2012 16:50:49 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Ground-of-float-unused-RTC-pins/m-p/147933#M72 robsouthworth 2012-10-23T16:50:49Z Re: Ground of float unused RTC pins? https://community.nxp.com/t5/Kinetis-Microcontrollers/Ground-of-float-unused-RTC-pins/m-p/147934#M73 <HTML><HEAD></HEAD><BODY><P>You can leave VBAT floating, same goes for XTAL32 and EXTAL32, you can also leave the XTAL pins grounded.</P></BODY></HTML> Wed, 06 Feb 2013 22:26:09 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Ground-of-float-unused-RTC-pins/m-p/147934#M73 apanecatl 2013-02-06T22:26:09Z