Abstract:This paper is to provide a method for driver software design on TMS320F2812, used FRAM implement the data access interface. It mainly introduced the functional characteristics of DSP chip TMS320F2812 SPI module and FM25CL64 chip, as well as the driver software design of SPI module, memory and application interface. By sufficient test and initial application, driver software design advisability, flexible interface, be able to meet the needs of the system.