https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/External-Memory-Controller/m-p/1205859#M11978 <P>Hi,</P> <P>RT1020 SEMC module can run at 166MHz, so the SDRAM should be able to run at 166MHz. But the IO has overshoot problem. It will have EMI/EMC problem if hardware design is not very perfect. It is strongly recommended to follow the hardware development guide.&nbsp;</P> <P>&nbsp;</P> <P>Regards,</P> <P>Jing</P> Mon, 04 Jan 2021 07:11:00 GMT jingpan 2021-01-04T07:11:00Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/External-Memory-Controller/m-p/1205702#M11972 <P>The speed at which EMC connects to SDRAM is different from the description in the RT1020 reference manual and user manual. Which one is correct?</P> Mon, 04 Jan 2021 02:26:40 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/External-Memory-Controller/m-p/1205702#M11972 13692631114 2021-01-04T02:26:40Z https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/External-Memory-Controller/m-p/1205859#M11978 <P>Hi,</P> <P>RT1020 SEMC module can run at 166MHz, so the SDRAM should be able to run at 166MHz. But the IO has overshoot problem. It will have EMI/EMC problem if hardware design is not very perfect. It is strongly recommended to follow the hardware development guide.&nbsp;</P> <P>&nbsp;</P> <P>Regards,</P> <P>Jing</P> Mon, 04 Jan 2021 07:11:00 GMT https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/External-Memory-Controller/m-p/1205859#M11978 jingpan 2021-01-04T07:11:00Z