LPC1788 2x SDRAM chips

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Imagineme on Tue Dec 04 03:21:56 MST 2012
Hi, i have the following  idea/question. I`m designing my own development board based on lpc1788 and i want to connect 1 SDRAM chip(MT48LC16M16A2P 256M (16Mx16)) and leave traces and pads on the PCB for connection a second one (the same). My question is the following can i configure them to work in 16 bit  manner, because i find same connections in which the 1st memory takes data lines 0:15 and the 2nd 16:31  but, this configuration has different Address line in 32-bit wide bus the address lines start from A2 and in 16-bit wide they start form A1.So i`m wondering if i can connect data lines 0-15 to both SDRAM chips  and use the separate  EMC_DYCS0; EMC_DYCS1 EMC_CKE0 EMC_CKE1 EMC_CLK0 EMC_CLK1 EMC_DQM0 and EMC_DQM1 to access them them in 16 bit manner. Thanks for your time.