The SDRAM controller was designed which is applied in LED display control system

the whole system achieved a 25664 pixels real-time display control

and used XILINX's FPGA- XC3S250E as the vector hardware. The use of dynamic memory which has the high frequency

low cost and space excellences breaks the limitation of static RAM. The controller was prepared by VHDL language

the core part is composed of the state machine

and the introduction of reading and writing modern methods improved systems bus utilization

systemic and universal performances.