I am using the documentation for the LPCXpress54628 development board as a guide to replicate the interface with the SDRAM IC IS42S16800F-6BLI in my own design. I noticed on the diagram that there is a P1_24-EMC_A12 identified connected to pin G1. However, the datasheet for that device shows pin G1 as NC. I will assume it really isn't a functioning connection. The 12 address lines A0-A11 do provide the 4K of addressing for the memory. Was there a part change? The other part number (W9812G6JB) also shows NC on G1.
Thanks
Sam
Hi @samv
Yes, The W9812G6JB and IS42S16800F-6BLI both have only 12 bit address lines.
They are 128Mb SDRAM.
You can also check the LPC54628 RM.
BR
Harry