Hi,First of all i know that FSMC in STM32F2xx does not support SDRAM devices. But i think that with little effort it should somehow work reasonably.A good example of how the others try to this is at
SDRAM != 1980's DRAMIf you need the cost/performance/size that SDRAM/DDR/DDR2 offers, you need a micro that supports it out of the box. Like the Atmel AT91SAM9xxx or Freescale Kinetis K60 ST's solution is PSRAM, what kind of memory size/cost are you looking for?
The PSRAM is quite problem, for example on farnell.com store there is none available :\Cost should be max 8,-euro and size from 16MbitsAccess time max 1us for 16bits parallel access.
''Mouser has 16MB SRAM @ US$8''Is it MBit or Byte...? We recently used Cellular RAM..works on FSMC on Bank0 (RAM). Still testing it, however no complaints so far. Except the package is BGA