topic MCF51jm32 problem in ColdFire/68K Microcontrollers and Processors https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF51jm32-problem/m-p/151509#M3958 <HTML><HEAD></HEAD><BODY><P>Hello ,</P><P>&nbsp; I'm using for the current project a MCF51JM32 processor, I made the pcb&nbsp; and when I apply the power supply to the board I observed that the reset pin from the processor it goes up and down it isn't stable I check every signal that arrive in the processor pin it it look OK and sincerely I really don't understand way it is going up and down&nbsp; this pin. If u have any idea/ suggestion for my problem it will be great. .<A href="http://freescale.i.lithium.com/i/smilies/16x16_robot-sad.gif"><IMG alt=":robotsad:" class="emoticon emoticon-robotsad" src="http://freescale.i.lithium.com/i/smilies/16x16_robot-sad.gif" title="Robot Sad" /></A>&nbsp; tks.&nbsp;</P></BODY></HTML> Tue, 28 Sep 2010 01:18:27 GMT must 2010-09-28T01:18:27Z MCF51jm32 problem https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF51jm32-problem/m-p/151509#M3958 <HTML><HEAD></HEAD><BODY><P>Hello ,</P><P>&nbsp; I'm using for the current project a MCF51JM32 processor, I made the pcb&nbsp; and when I apply the power supply to the board I observed that the reset pin from the processor it goes up and down it isn't stable I check every signal that arrive in the processor pin it it look OK and sincerely I really don't understand way it is going up and down&nbsp; this pin. If u have any idea/ suggestion for my problem it will be great. .<A href="http://freescale.i.lithium.com/i/smilies/16x16_robot-sad.gif"><IMG alt=":robotsad:" class="emoticon emoticon-robotsad" src="http://freescale.i.lithium.com/i/smilies/16x16_robot-sad.gif" title="Robot Sad" /></A>&nbsp; tks.&nbsp;</P></BODY></HTML> Tue, 28 Sep 2010 01:18:27 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF51jm32-problem/m-p/151509#M3958 must 2010-09-28T01:18:27Z Re: MCF51jm32 problem https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF51jm32-problem/m-p/151510#M3959 <HTML><HEAD></HEAD><BODY><P>I have seen this myself on a protoype PCB I was working on. I never did find the answer, however I did swap the processor for another and it worked fine. I guess something went wrong when it was put on the PCB (it was hand soldered).</P><P>I know that doesn't really help much but if you have a few proto PCB's and a spare CPU give it a shot.</P></BODY></HTML> Mon, 04 Oct 2010 14:25:00 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/MCF51jm32-problem/m-p/151510#M3959 Bloodhound 2010-10-04T14:25:00Z