i.MX RT1024 with an external SDRAM

[Jigs]

I want use the i.MX RT1024 with an external 64MB SDRAM. As per the datasheet it supports 8/16-bit SDRAM External memory interfaces. Which mode is better from performance perspective and how ? Please let me know if there is any link/reference to go through for this details. Thanks

[RaRo · Accepted solution]

Hello @Jigs,

The usage between 8/16-bit SDRAM could have the following differences:

• 8 bit SDRAM means less data bus lines, while 16 bit SDRAM means more data bus width which usually refers to a faster bus and higher transfer rate.
• 16 bit SDRAM could transmit more data in parallel (as it has more bus lines) than an 8 bit SDRAM in one transfer.

We share you an interesting application note relating with the performance optimization of the i.MX RT Series, that could be useful to the topic: AN12437: i.MX RT Series Performance Optimization – Application Note.

Finally, we share some community post using 8bit SDRAM:

• SDRAM with 8-bit data bus connection - NXP Community
• Problem with eight bit SRAM SEMC interface RT1020 - NXP Community

Best regards, Raul.

[Jigs]

Thank you @RaRo . Really appreciate your detail explanation on this.