topic pemicro BDM not working anymore in 8-bit Microcontrollers https://community.nxp.com/t5/8-bit-Microcontrollers/pemicro-BDM-not-working-anymore/m-p/256291#M19906 <HTML><HEAD></HEAD><BODY><P>So my PCB managed to supply power the wrong way round to the 6-way header on the BDM cable. </P><P>PC and debugger IDE still pick up the BDM on the USB side - blue LED illuminates, but when I connect voltage to my target board pins there seems to be a shot. (Orange LED does not turn on).</P><P>If i supply 3V directly via PSU to the GND and VCC pins, the yellow light does come on but it draws quite a bit of current. I noticed some protection zeners against higher voltage but I dont think there was anything for reverse bias.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Any idea what I could have popped?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Thanks!</P><P>Xarion</P></BODY></HTML> Mon, 04 Nov 2013 18:54:12 GMT Xarion 2013-11-04T18:54:12Z pemicro BDM not working anymore https://community.nxp.com/t5/8-bit-Microcontrollers/pemicro-BDM-not-working-anymore/m-p/256291#M19906 <HTML><HEAD></HEAD><BODY><P>So my PCB managed to supply power the wrong way round to the 6-way header on the BDM cable. </P><P>PC and debugger IDE still pick up the BDM on the USB side - blue LED illuminates, but when I connect voltage to my target board pins there seems to be a shot. (Orange LED does not turn on).</P><P>If i supply 3V directly via PSU to the GND and VCC pins, the yellow light does come on but it draws quite a bit of current. I noticed some protection zeners against higher voltage but I dont think there was anything for reverse bias.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Any idea what I could have popped?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Thanks!</P><P>Xarion</P></BODY></HTML> Mon, 04 Nov 2013 18:54:12 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/pemicro-BDM-not-working-anymore/m-p/256291#M19906 Xarion 2013-11-04T18:54:12Z