In section 3 of the user manual for my Nexys A7 FPGA development board there is the following statement regarding the 2 external memories...
"1Gib (128MiB) DDR2 SDRAM and a 128Mib (16MiB) non-volatile serial Flash device"
I don't completely understand the specs in parenthesis? I think they may refer to configurations within the memory ICs themselves.
For instance... for the DDR2 SDRAM, PN: MT47H64M16HR-25E I looked at the data sheet and saw the following configuration option listed...
128 Meg x 8 (16 Meg x 8 x 8 banks)
So I just wanted to try and better understand these specs for the on board memory.