01-17-2019 11:49 AM
The N25Q128A13E1241F TR is obsolete and I was hoping to use the MT25QL128ABA8E12-1SIT as a replacement. I do have a concern. The replacement part has a reset# pin associated with pin A4, whereas the N25Q128 part does not have a reset# associated with pin A4. Micron does state that "Ball A4 = RESET# or DNU, depending on the part number. This signal has an internal pull-up resistor and may be left unconnected if not used." We already have the boards fabbed from a while ago so there is no way for us to connect to the reset pin on the new part. Has anyone used this part or any similar parts with an Artix-7 or any other 7 Series FPGA and have left that pin floating?
Thanks in advance.
01-17-2019 06:44 PM
This part is verified by Xilinx so it should work. If Micron says it can be left floating, then it would be OK.
Did you encounter failure or something?
01-18-2019 03:39 PM
As @iguo suggested it should work. Even our tool consider these parts in similar way.
Here is the snapshot from VIvado file generation: Here is the AR https://www.xilinx.com/support/answers/68566.html
You can also refer to following migration guide https://www.micron.com/-/media/client/global/documents/products/technical-note/nor-flash/tn2501_migrating_n25q_to_mt25ql.pdf
Here is the design advisory from Micron: