Quad SPI memory replacement on STM32F746G-DISCO

[SProg]

Hello,

We design a new custom PCB based on STM32F746G-DISCO board to support TouchGFX functionalities.

Since the N25Q128A13EF840E Flash memory is obsolete, we are thinking about MT25QL128ABA1EW9-0SIT (same package - same pinout).

The problem is that MT25QL128ABA1EW9-0SIT is not supported on External Loader section of ST-Link Utility.

Is there any way to import this new memory on ST-Link?

[Tesla DeLorean]

If the command support is sufficiently different you'd need to rebuild the external loader to accommodate the new part.

​

Is the new part failing during erase or write using the existing loader?​

[SProg]

Board is still on hardware design stage.

I just can not find the  MT25QL128 on the ST Link, that's why i am asking

[Tesla DeLorean]

It will likely work with the MT25Q(L)128 loader, seem to think there was perhaps one command having some overlap. If not the code would need a little rework.

My test fixturing uses the the 300mil SOP2-16 (SOIC16 Wide) packages

Pretty sure I have working cod for the RW207 part, or ST uses it on one or another board.

https://www.micron.com/products/nor-flash/serial-nor-flash/part-catalog/mt25ql128aba8esf-0sit

If designing a board I would suggest using the 300mil SOP2-16 form factor as it provides for a very wide selection of parts, across manufacturers using a consistent land pattern, the 8-pin SOIC/DFN packages are rather inconsistent.

The external loaders are a custom built, they address specific part, and board pin assignment issues

[Andreas Bolsch]

See https://community.st.com/s/question/0D50X0000BVoMVV/which-qspi-flash-would-you-choose-for-custom-board