https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Grounding/m-p/1765394#M19532 <P>Hello,</P><P>I am using MCU S12ZVMC with external Xtal.</P><P>Should I connect VSS1 pin to the exposed pad and then Xtal local ground to pin VSS1?</P><P>Thanks in advance!</P><P>&nbsp;</P> Wed, 29 Nov 2023 05:35:51 GMT VP63 2023-11-29T05:35:51Z https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Grounding/m-p/1765394#M19532 <P>Hello,</P><P>I am using MCU S12ZVMC with external Xtal.</P><P>Should I connect VSS1 pin to the exposed pad and then Xtal local ground to pin VSS1?</P><P>Thanks in advance!</P><P>&nbsp;</P> Wed, 29 Nov 2023 05:35:51 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Grounding/m-p/1765394#M19532 VP63 2023-11-29T05:35:51Z https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Grounding/m-p/1765607#M19533 <P>Hi,</P> <P><STRONG>The AN5207:</STRONG></P> <P>All GROUND pins of the microcontroller (VSSX1, VSSX2, VSS1, VSS2, VSSA, and VSSB, VSSC) <STRONG>must</STRONG> be connected together.</P> <P><STRONG>The reference manual:</STRONG></P> <P>1.7.4 Package and Pinouts</P> <P>…</P> <P>…</P> <P>The following package options are offered.</P> <UL> <LI>80LQFP-EP (exposed pad) with internal CANPHY and CAN VREG.</LI> <LI>64LQFP-EP (exposed pad) with internal LINPHY or HV physical interface.</LI> <LI>64LQFP-EP (exposed pad) with CAN VREG to support a low cost external CANPHY.</LI> <LI>48LQFP-EP (exposed pad)</LI> </UL> <P><STRONG>The exposed pad must be connected to a grounded contact pad on the PCB.</STRONG></P> <P>The exposed pad has an electrical connection within the package to VSSFLAG (VSSX die connection).</P> <P>The pin out details are shown in the following diagrams. Signals in brackets denote routing options.</P> <P>&nbsp;</P> <P>Best regards,</P> <P>Ladislav</P> Wed, 29 Nov 2023 10:06:14 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Grounding/m-p/1765607#M19533 lama 2023-11-29T10:06:14Z