topic Re: SDRAM A0 is too slow. What might be the problem? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/SDRAM-A0-is-too-slow-What-might-be-the-problem/m-p/588907#M21869 <HTML><HEAD></HEAD><BODY><P>In addition to this Bank select are not doing anything and CAS+RAS are at 3.3V at all times.</P></BODY></HTML> Wed, 10 Aug 2016 13:15:02 GMT moller 2016-08-10T13:15:02Z SDRAM A0 is too slow. What might be the problem? https://community.nxp.com/t5/LPC-Microcontrollers/SDRAM-A0-is-too-slow-What-might-be-the-problem/m-p/588906#M21868 <HTML><HEAD></HEAD><BODY><P>I am trying to configure my AS4C2M32SA-6TIN 64MB SDRAM on my LPC4337 (costum board). </P><P></P><P>I have verified that the EMC clock is half M4 core clock (204/2=102MHz) but when measuring A0<BR />this is only running at 1MHz (expected to run at half core clock when read/write to the entire SDRAM).</P><P></P><P></P><P>What could be the reason for this? I got an MPC4357-EVB with 32MB 16-bit SDRAM and got the example working in uVision.</P><P></P><P>When trying to use this example on my 64MB 32-bit SDRAM in emIDE (with corrected parameters that fits this SDRAM) nothing works.</P><P></P><P>my config setup can be seen here <A href="http://pastebin.com/WAu4hXke" title="http://pastebin.com/WAu4hXke">http://pastebin.com/WAu4hXke</A></P><P></P><P>Hope someone is able to help.</P></BODY></HTML> Wed, 10 Aug 2016 08:08:47 GMT https://community.nxp.com/t5/LPC-Microcontrollers/SDRAM-A0-is-too-slow-What-might-be-the-problem/m-p/588906#M21868 moller 2016-08-10T08:08:47Z Re: SDRAM A0 is too slow. What might be the problem? https://community.nxp.com/t5/LPC-Microcontrollers/SDRAM-A0-is-too-slow-What-might-be-the-problem/m-p/588907#M21869 <HTML><HEAD></HEAD><BODY><P>In addition to this Bank select are not doing anything and CAS+RAS are at 3.3V at all times.</P></BODY></HTML> Wed, 10 Aug 2016 13:15:02 GMT https://community.nxp.com/t5/LPC-Microcontrollers/SDRAM-A0-is-too-slow-What-might-be-the-problem/m-p/588907#M21869 moller 2016-08-10T13:15:02Z