The thing I wan to do is add the same sdram as on the SoMs. Is it possible to add sdram on the LQFP variant or do I need the BGA package? Are the schematics for these modules open source?
I am working on a project that requires to be very cheap. This is why I went with the soc. The product however needs to be able to remotely update it’s firmware and software so I am in need of extra RAM.
It is special order for high volume customers. If you are only buying it to save money vs buying SCM20260N then you are not going to be saving. But if you need it because you need a very tiny setup and you have volume behind it then we can talk directly and discuss options.
Either way, fell free to give us a call to discuss your needs.
Is there any market for a device in between the SCM20100E and the SCM20260E/N. Something based on the same MCU as the 20100E, Ethernet PHY but include the 32MB Ram, no TFT or camera. 8GB Flash could be added to the customer board only if required (Unless there was room on the SOC.) I think 32MB Ram should be available as a BGA.
I like the idea of the SCM20100E for a cellular IoT project but without the RAM remote firmware updates aren’t available.
I am in the proces of developing a lot of products for the marine industry and full IFU will be awesome because those ships can be on the other side of the continent
If I read the table in the datasheet the FMC should be available on the 32H743VI. (https://www.st.com/resource/en/datasheet/stm32h743vi.pdf)
Now I didn’t go through to see if it is shared with other more critical pins. To maintain the small size the RAM would need to be BGA which I haven’t looked into.
Like @Gus_Issa said, if firmware updates can safely be done without the external RAM then that solves the primary issue.