02-13-2020 08:08 AM - edited 02-13-2020 08:17 AM
Hello,
I am running out of space on a XC7A35T, which uses a N25Q128 configuration flash.
If I change to a XC7A100T FPGA, will I need increase the configuration flash size?
Stephen
02-13-2020 08:32 AM
It depends on your current Flash size... You are going from ~17Mb (rounded up) to ~31Mb for uncompressed bitstream sizes (base 10 - not base 2)
see https://www.xilinx.com/support/documentation/user_guides/ug470_7Series_Config.pdf page 14
But since flash generally comes in power of 2 sizes, I suspect you'll be fine for this particular case.
Cheers,
bt
02-13-2020 08:32 AM
It depends on your current Flash size... You are going from ~17Mb (rounded up) to ~31Mb for uncompressed bitstream sizes (base 10 - not base 2)
see https://www.xilinx.com/support/documentation/user_guides/ug470_7Series_Config.pdf page 14
But since flash generally comes in power of 2 sizes, I suspect you'll be fine for this particular case.
Cheers,
bt
02-13-2020 09:12 AM
According to the document posted, the minimum flash size for XC7A100T is 32Mbits, so I should be fine using the 128Mb flash I am currently using.
Thanks.