topic Re: iMX8M Plus + LPDDR4 with different speed grades in i.MX Processors

iMX8M Plus + LPDDR4 with different speed grades

khang_letruong — Wed, 26 Apr 2023 17:19:22 GMT

Dear NXP Community,

We are currently designing a new iMX8M Plus based custom board using LPDDR4: Micron MT53D512M32D2 which comes with two versions : MT53D512M32D2-053 and MT53D512M32D2-046.

We would like to take MT53D512M32D2-053 as it is more affordable, but we are not sure about its availability. For that reason, we might also need to use MT53D512M32D2-046 temporarily. I would like to know if the lpddr4_timing.c generated for MT53D512M32D2-053 with lower clock-rate/data-rate could be used for the MT53D512M32D2-046 with higher clock-rate/data-rate WITHOUT re-calibration and stress testing, please?

Thanks and best regards,
Khang

Re: iMX8M Plus + LPDDR4 with different speed grades

JorgeCas — Wed, 26 Apr 2023 21:49:32 GMT

Hello,

Just to be safe on your design I would suggest to re-calibrate and run the DDR stress tool:

i.MX 8M Family DDR Tool Release

This would help on getting configuration for your new DDR.

Best regards.

Re: iMX8M Plus + LPDDR4 with different speed grades

khang_letruong — Thu, 27 Apr 2023 02:59:43 GMT

Hi @JorgeCas ,

That would be the best option. However, my customer does not want to pay twice for the bringing-up

Best Regards,

Khang