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2402765_en-US
2402765_en-US
We are investigating the use of RT1171CVM8B on a new product.
Does this i.MX RT family member support mobile (low power, 1.8V) SDRAM?
It is not immediately clear from the datasheet, reference manual and available application notes and schematics that it does; it is inferred by the port drivers being specified for both 1V8 and 3V3 (NVCC_EMC1,2). It is also inferred from similar questions and answers in the affirmative for the i.MX RT1060 and RT1050.
I would like to avoid a gotcha where some obscure part of the EMC or SDRAM interface fails with 1V8 parts; Otherwise, why is it not clearly listed in the datasheet!?
Kind regards,
George Tzanatos.
Dear @georgetzanatos ,
The RT1171 does support Mobile SDRAM (low-power 1.8 V SDRAM).
We agree that the current documentation does not state this explicitly. In the datasheet and reference manual, the memory protocol support and I/O voltage modes are described separately rather than being combined into a single "Mobile SDRAM support" statement.
I understand your concern. Please feel free to use Mobile SDRAM on the RT1171. The key requirement is to configure the relevant NVCC_EMC1/2 power domains for 1.8V operation to match the SDRAM I/O voltage level.
Best Regards,
Shelly
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