topic Re: Issues with Replacing SDRAM Chips on RT1052 in i.MX Processors

Issues with Replacing SDRAM Chips on RT1052

zhangyuanhe — Wed, 09 Apr 2025 08:33:21 GMT

My RT1052 board uses the IS42S16160 32MB SDRAM, which works perfectly. However, after replacing it with the IS42S16400 8MB SDRAM, it fails to work properly. What configurations need to be changed?

Re: Issues with Replacing SDRAM Chips on RT1052

Omar_Anguiano — Thu, 10 Apr 2025 23:30:00 GMT

You need to change the memsize of the device on the sdramconfig variable. This on the case that the only difference between the two is only the size, if there are more differences on timing then the rest of parameters need to be tuned according the datasheet specifications.
Is the pinout of both similar?

Best regards,
Omar

Re: Issues with Replacing SDRAM Chips on RT1052

OneByte — Wed, 16 Apr 2025 10:09:52 GMT

is RT1052 support 8bit of row_addr ? i can not SEMC_SDRAM_COL8()?

Re: Issues with Replacing SDRAM Chips on RT1052

Omar_Anguiano — Wed, 16 Apr 2025 22:38:49 GMT

SDRAM device type with 2 banks or 8 columns is not supported.

Best regards,
Omar

Re: Issues with Replacing SDRAM Chips on RT1052

OneByte — Tue, 14 Oct 2025 12:09:03 GMT

ok, thanks your answer about my question！