LPC MicrocontrollersのトピックReset behavior of LPC2368 https://community.nxp.com/t5/LPC-Microcontrollers/Reset-behavior-of-LPC2368/m-p/552341#M14368 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by schneekette on Mon Dec 30 08:17:19 MST 2013</STRONG><BR /><SPAN>Hi!</SPAN><BR /><BR /><SPAN>I'm having an issue with the LPC236x reset behaviour: On all my boards the RESET# signal is being completely ignored. When pulling RESET# (pin 17 on FBD100 package) to GND, nothing happens. The low does not even show up on RESET_OUT# (pin 14). The LPC just continues running.</SPAN><BR /><BR /><SPAN>Given:</SPAN><BR /><SPAN>* LPC2364 and LPC2368 in FBD100 package</SPAN><BR /><SPAN>* connection of dedicated pins as on Keil MCB2300 (...maybe I'm missing something here?)</SPAN><BR /><SPAN>* RESET# connected on pin 17</SPAN><BR /><BR /><SPAN>Really tested:</SPAN><BR /><SPAN>I must admit, that I would not believe it if someone told me. Therefore I really tried to touch pin 17 of the package directly with a GND connection to exclude the possibility of a bad solder joint or whatever. But the state of the RESET# pin is definitely ignored.</SPAN><BR /><BR /><SPAN>I could imagine the following reasons:</SPAN><BR /><BR /><SPAN>1) There is some possibility of disabling the RESET# input by the setup of the other dedicated pins (debug port etc). Actually I'm quite sure that I have the same setup as Keil does on the MCB2300, but maybe I'm not seeing something.</SPAN><BR /><BR /><SPAN>2) There is any possibility of disabling the RESET# input by software, which I'd find very unlikely.</SPAN><BR /><BR /><SPAN>3) There is an issue on my controllers. But I tested 2 different LPCs explicitly for this behaviour and they behave identical.</SPAN><BR /><BR /><SPAN>4) Any other idea?</SPAN><BR /><BR /><SPAN>I'd expect the most likely reason to be that it is possible to turn off the RESET# input by hardware and I'm doing this by accident. But I did not find any documentation about that and no reports of other users.</SPAN><BR /><BR /><SPAN>Do you have any idea what could be the reason for this behaviour?</SPAN><BR /><BR /><SPAN>And again: The low on&nbsp; pin 17 is definitely there...</SPAN><BR /><BR /><SPAN>Thank a lot!</SPAN><BR /><BR /><SPAN>Stephan</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 19:52:16 GMT lpcware 2016-06-15T19:52:16Z Reset behavior of LPC2368 https://community.nxp.com/t5/LPC-Microcontrollers/Reset-behavior-of-LPC2368/m-p/552341#M14368 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by schneekette on Mon Dec 30 08:17:19 MST 2013</STRONG><BR /><SPAN>Hi!</SPAN><BR /><BR /><SPAN>I'm having an issue with the LPC236x reset behaviour: On all my boards the RESET# signal is being completely ignored. When pulling RESET# (pin 17 on FBD100 package) to GND, nothing happens. The low does not even show up on RESET_OUT# (pin 14). The LPC just continues running.</SPAN><BR /><BR /><SPAN>Given:</SPAN><BR /><SPAN>* LPC2364 and LPC2368 in FBD100 package</SPAN><BR /><SPAN>* connection of dedicated pins as on Keil MCB2300 (...maybe I'm missing something here?)</SPAN><BR /><SPAN>* RESET# connected on pin 17</SPAN><BR /><BR /><SPAN>Really tested:</SPAN><BR /><SPAN>I must admit, that I would not believe it if someone told me. Therefore I really tried to touch pin 17 of the package directly with a GND connection to exclude the possibility of a bad solder joint or whatever. But the state of the RESET# pin is definitely ignored.</SPAN><BR /><BR /><SPAN>I could imagine the following reasons:</SPAN><BR /><BR /><SPAN>1) There is some possibility of disabling the RESET# input by the setup of the other dedicated pins (debug port etc). Actually I'm quite sure that I have the same setup as Keil does on the MCB2300, but maybe I'm not seeing something.</SPAN><BR /><BR /><SPAN>2) There is any possibility of disabling the RESET# input by software, which I'd find very unlikely.</SPAN><BR /><BR /><SPAN>3) There is an issue on my controllers. But I tested 2 different LPCs explicitly for this behaviour and they behave identical.</SPAN><BR /><BR /><SPAN>4) Any other idea?</SPAN><BR /><BR /><SPAN>I'd expect the most likely reason to be that it is possible to turn off the RESET# input by hardware and I'm doing this by accident. But I did not find any documentation about that and no reports of other users.</SPAN><BR /><BR /><SPAN>Do you have any idea what could be the reason for this behaviour?</SPAN><BR /><BR /><SPAN>And again: The low on&nbsp; pin 17 is definitely there...</SPAN><BR /><BR /><SPAN>Thank a lot!</SPAN><BR /><BR /><SPAN>Stephan</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 19:52:16 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Reset-behavior-of-LPC2368/m-p/552341#M14368 lpcware 2016-06-15T19:52:16Z Re: Reset behavior of LPC2368 https://community.nxp.com/t5/LPC-Microcontrollers/Reset-behavior-of-LPC2368/m-p/552342#M14369 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by TheFallGuy on Mon Dec 30 08:50:56 MST 2013</STRONG><BR /><SPAN>Might be worth trying to "Ask NXP Experts" on the NXP main page:</SPAN><BR /><SPAN><A class="jive-link-external-small" href="https://community.nxp.com/external-link.jspa?url=http%3A%2F%2Fwww.nxp.com%2Ftechnicalsupport%23" rel="nofollow" target="_blank">http://www.nxp.com/technicalsupport#</A></SPAN></BODY></HTML> Wed, 15 Jun 2016 19:52:17 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Reset-behavior-of-LPC2368/m-p/552342#M14369 lpcware 2016-06-15T19:52:17Z