n this paper, features and application of FRAM memory FM20L08 are introduced.FM20L08 not only features the virtue of unlimited read/write cycles and no delay write,but also features of write protect low voltage lockout and software programmable block .1M byte wide memory logically organized as 131,072×8 has been designed to be a drop-in replace for standard? SRAMs .The pin description and some operations are introduced. The method of designing the interface circuit between the FM20L08 and the MCU for high speed data recorder is described.