IS61WV25616MEBLL and IS64WV25616MEBLL are recent Muxed PSRAM from ISSI. I would like to use these with an LQFN100 STM32H750VBTx to avoid complicated routing with SRAM and going to a larger LQFN or BGA package.
The FMC of this MCU supports Muxed PSRAM. I am trying to understand if the part is compatible by comparing the datasheet with what I see in CubeIDE.
I do not understand:
- The data sheet has 16 Muxed Address/Data lines but it also has two additional address lines A16, A17 (PSRAM)
- Byte Enable (CubeIDE)
Questions:
- Do I configure the data as 16-bit or 18-bit? It seems to have 16-bit data and an 18-bit address.
- In CubeIDE I noticed that when I select the Byte Enable checkbox, I get two pins: FMC_NBL0 and FMC_NBL1. Should I connect these two pins to A16 and A17?
- Any suggestions on PSRAM parts that are known to work well with STM32H7?
