Hello friends,
Im using 7 inches TFT module (800x480) with LPC1788 controller. This is the first time I'm using a TFT module. Somehow I have managed to get some theoretical idea about TFT. But I have confused with the use SDRAM with TFT module. Is SDRAM is optional or it is compulsory if we are using a TFT LCD especially 7 inches LCD? Can someone please help me regarding this issue?
the buffer or register for writing and reading the data to the external SDRAM.
Once you successfully initialize the EMC/SDRAM, the external SDRAM would be mapped to the ARM Cortex-M3 processor 4G address space.
See : UM10470 Chapter 9: LPC178x/7x External Memory Controller (EMC) 9.7 Memory bank select Table 110. Memory bank selection
Chip select pin Address range Memory type Size of range EMC_DYCS0 0xA000 0000 - 0xAFFF FFFF Dynamic 256 MB EMC_DYCS1 0xB000 0000 - 0xBFFF FFFF Dynamic 256 MB EMC_DYCS2 0xC000 0000 - 0xCFFF FFFF Dynamic 256 MB EMC_DYCS3 0xD000 0000 - 0xDFFF FFFF Dynamic 256 MB