【摘要】 充分利用了FRAM所具有的随机读取速度快、非易失性等特性,提出了采用FM18L08的12导心电图机的存储器扩展的解决方案。系统应用FM18L08独立作为DSP外围存储器扩展,替代了传统ROM和SRAM分立设计,简化了系统硬件和软件设计,提高了系统可靠性,并设计了FRAM与高速DSP芯片的接口,提高了存储器的访问速度,同时实现了心电数据快速无挥发存储。更多还原

【Abstract】 Utilizing sufficiently FRAM’s characteristics of nodelay read and nonvolatility and etc a solution of 12-lead ECG memory expansion is developed in this paper. FM18L08 is adopted as peripheral memory expansion of DSP instead of traditional separate ROM and SRAM. This scheme predigests hardware and software design and increases the stabilization. In addition the interface between FRAM and high-speed DSP is designed to improve the velocity of memory accessing and realize ECG data’s nonvolatile storage.更多还原