How to select a flash for FPGA ?

[alex_sun]

Hi Expert,

     which aspect should be consider, if I want to select a compatible flash for FPGA?

     I have referenced the following reference,but the flash which I select is not in this list.(The flash I select is MT25Q,and FPGA is Spartan-6).

https://www.xilinx.com/support/documentation/sw_manuals/xilinx14_7/pim_r_supported_spi_bpi_proms.htm

What I want to know is that:

If I want to select a flash,what I know to consider is : 

     1:Capacity:

                1)The bitstream size of the FPGA device can be load into the falsh

                2)If MultiBoot , need more larger

     2:Interface:

                1)If I use SPI X1, the flash need to support SPI X1 mode

                2)Flash CMD need compatible with FPGA configuration opcode(like 0x03 and 0xe8), as the attachment show.

     3:Impact need support this Device, or need to change the environment variable .

                   https://forums.xilinx.com/t5/Configuration/V6-LX240T-SPI-flash-N25Q256-Problem/td-p/646977

Are there other aspect need to consider?

[kkn · Accepted solution]

you can use the MT25Q flash, check the following AR how to program this flash

https://www.xilinx.com/support/answers/68677.html

if you are going to use multiboot then try to use the flash part which can hold the number of bitstreams you will be programming

[alex_sun]

@kkn Thanks for solving my problem. 

But if MT25Q is supported by iMpact, why not update the following information? This may convenience for us to reference.

https://www.xilinx.com/support/documentation/sw_manuals/xilinx14_7/pim_c_introduction_indirect_programming.htm

[kkn]

Impact tool is matured tool and there are no change requests for this tool/doc. so this is the reason there is a solution record.