Digital Signal Controllers中的主题 MC5684565 reset lock-up https://community.nxp.com/t5/Digital-Signal-Controllers/MC5684565-reset-lock-up/m-p/500190#M743 <HTML><HEAD></HEAD><BODY><P style="color: #000000; text-indent: 0px;">I have a condition at 95 degree C ambient where a TLV803S is connected to the reset pin 2 of a Freescale MC5684565 uC with a 10K pull up to 3.3v and a 0.1uF pull down to ground which some times lock to a 600mV level.</P><P style="color: #000000; text-indent: 0px;">If I bring the temperature to room it still is at this level.</P><P style="color: #000000; text-indent: 0px;">If I remove power and re-energize it still stays at this level.</P><P style="color: #000000; text-indent: 0px;">If the reset line is shorted to ground and opened, it stays at this level.</P><P style="color: #000000; text-indent: 0px;">If the reset line is shorted to 3.3 volts and opened, the reset line now operates normally.</P><P style="color: #000000; text-indent: 0px;">At this moment in time we do not know what triggers this condition.</P><P style="color: #000000; text-indent: 0px;">We do not know if it is the supervisor or the uC.</P><P style="color: #000000; text-indent: 0px;">We are currently doing non-evasive testing before we can start physically altering the node.</P><P style="color: #000000; text-indent: 0px;">Dose anyone have any ideas what this may be?</P><P style="min-height: 8pt; padding: 0px; color: #000000; text-indent: 0px;">&nbsp;</P><P style="color: #000000; text-indent: 0px;">Ken DeGrave</P></BODY></HTML> Wed, 23 Mar 2016 14:32:32 GMT kendegrave 2016-03-23T14:32:32Z MC5684565 reset lock-up https://community.nxp.com/t5/Digital-Signal-Controllers/MC5684565-reset-lock-up/m-p/500190#M743 <HTML><HEAD></HEAD><BODY><P style="color: #000000; text-indent: 0px;">I have a condition at 95 degree C ambient where a TLV803S is connected to the reset pin 2 of a Freescale MC5684565 uC with a 10K pull up to 3.3v and a 0.1uF pull down to ground which some times lock to a 600mV level.</P><P style="color: #000000; text-indent: 0px;">If I bring the temperature to room it still is at this level.</P><P style="color: #000000; text-indent: 0px;">If I remove power and re-energize it still stays at this level.</P><P style="color: #000000; text-indent: 0px;">If the reset line is shorted to ground and opened, it stays at this level.</P><P style="color: #000000; text-indent: 0px;">If the reset line is shorted to 3.3 volts and opened, the reset line now operates normally.</P><P style="color: #000000; text-indent: 0px;">At this moment in time we do not know what triggers this condition.</P><P style="color: #000000; text-indent: 0px;">We do not know if it is the supervisor or the uC.</P><P style="color: #000000; text-indent: 0px;">We are currently doing non-evasive testing before we can start physically altering the node.</P><P style="color: #000000; text-indent: 0px;">Dose anyone have any ideas what this may be?</P><P style="min-height: 8pt; padding: 0px; color: #000000; text-indent: 0px;">&nbsp;</P><P style="color: #000000; text-indent: 0px;">Ken DeGrave</P></BODY></HTML> Wed, 23 Mar 2016 14:32:32 GMT https://community.nxp.com/t5/Digital-Signal-Controllers/MC5684565-reset-lock-up/m-p/500190#M743 kendegrave 2016-03-23T14:32:32Z Re: MC5684565 reset lock-up https://community.nxp.com/t5/Digital-Signal-Controllers/MC5684565-reset-lock-up/m-p/500191#M744 <HTML><HEAD></HEAD><BODY><P>Hi, Ken,</P><P>I think the 0.1uF capacitor in unnecessary, how about removing it?</P><P>BR</P><P>XiangJun Rong</P></BODY></HTML> Thu, 24 Mar 2016 06:19:46 GMT https://community.nxp.com/t5/Digital-Signal-Controllers/MC5684565-reset-lock-up/m-p/500191#M744 xiangjun_rong 2016-03-24T06:19:46Z