关键词: FPGA, Flash, PROM, 扩展, SPI接口, 最小系统

Abstract:

An extension of the PROM based on the minimum system of the FPGA is proposed in this paper.By controlling the FLASH chip with the SPI interface used for configuring the FPGA,the iterative usage of the flash chip is realized.The solution uses no other chips but the minimum system of the FPGA,and thus can predigest the design and decrease the spending of pins.A software design process of controlling the FLASH by the FPGA is also described,and the simulation wave of the design process is given.Finally,the correctness of the solution is verified by the observation of the ChipScope software.