topic microcontroller problem in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776570#M15461 <HTML><HEAD></HEAD><BODY><P>Hi every body.&nbsp;There is&nbsp;a MC9S12XHZ256 microcontroller in truck dashboard. a battery cable disconnect from alternator and the circuit was burned. now when i ohm test the micro, there is a short circuit between Vdd and Vss. what's the problem?</P></BODY></HTML> Wed, 31 Jan 2018 20:09:45 GMT hosseings 2018-01-31T20:09:45Z microcontroller problem https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776570#M15461 <HTML><HEAD></HEAD><BODY><P>Hi every body.&nbsp;There is&nbsp;a MC9S12XHZ256 microcontroller in truck dashboard. a battery cable disconnect from alternator and the circuit was burned. now when i ohm test the micro, there is a short circuit between Vdd and Vss. what's the problem?</P></BODY></HTML> Wed, 31 Jan 2018 20:09:45 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776570#M15461 hosseings 2018-01-31T20:09:45Z Re: microcontroller problem https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776571#M15462 <HTML><HEAD></HEAD><BODY><P>Most likely destroyed.&nbsp; You did say the circuit burned.&nbsp; Depending on what was disconnected the alternator may have railed to a high voltage and that's what killed it.</P></BODY></HTML> Thu, 01 Feb 2018 00:04:46 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776571#M15462 dsherman 2018-02-01T00:04:46Z Re: microcontroller problem https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776572#M15463 <HTML><HEAD></HEAD><BODY><P>thanks David. i removed the micro from the board, but there is still a short circuit in the board. i disconnect all Vdd and Vss ics's pins from pcb but can't detect the short circuit.</P></BODY></HTML> Fri, 02 Feb 2018 09:24:42 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776572#M15463 hosseings 2018-02-02T09:24:42Z Re: microcontroller problem https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776573#M15464 <HTML><HEAD></HEAD><BODY><P>Hi Hossein,&nbsp;</P><P>It could be a bulk/decoupling capacitor between VDD, VSS.</P><P></P><P>Regards,</P><P>Daniel</P></BODY></HTML> Sun, 11 Feb 2018 17:47:43 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776573#M15464 danielmartynek 2018-02-11T17:47:43Z Re: microcontroller problem https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776574#M15465 <HTML><HEAD></HEAD><BODY><P>Thank you Daniel</P></BODY></HTML> Sun, 11 Feb 2018 18:55:08 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/microcontroller-problem/m-p/776574#M15465 hosseings 2018-02-11T18:55:08Z