IMX8mini PCB material

[idom]

Hi 

I have a design with based on the IMX8mini with the LPDDR4, In your "i.MX 8M Mini Hardware Developer’s Guide" you  recommend PCB material TU768, but the PCB manufacturer only have S1000-2,TG170.

Do you see any problem if I change the PCB material?

[Rita_Wang]

If the impedance matching it will be OK, but we still recommend you to use the HTG TU768,  because the HTG TU768 with low dielectric loss.

[idom]

Thanks for your answer,

Another question I have is about the stackup. There is a contradiction between the BRD file and MX8MMHDG.pdf.

In the BRD file the copper thickness is 1Oz but in hardware design guide it is 0.5oz. the problem is that there are 3mils traces on those layers. Hows did manage to manufacture it? Can I build the stackup with 0.5oz?