Design of NOR FLASH data read-write controller based on FPGA

In order to solve the problem of local non-volatile storage of a large amount of parameter data when the embedded platform processes a large amount of image data. A high-speed data read-write controller of 128Mbit Flash N25128A13ESEA0F is designed and implemented based on Xilinx K-7 series FPGA using VHDL hardware description language. The PC computer sends the data to the Flash controller through the serial port. And the controller stores the data in the designated location of the Flash. When the embedded platform is powered on next time, this controller can automatically read the required data and provide it to the FPGA internal high-speed image processing logic unit for use. The controller can work at a working frequency of 50MHz with a data throughput rate of 25MByte/s. And this design of Flash read-write controller can meet the basic requirements of an embedded platform Flash data throughput rate> 20MByte/s. After verification on the board, it can correctly read and write Flash data. And Flash data read-write controller was successfully applied in 2000fps high-speed image non-uniformity correction processing unit.