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在分析DRAM特性及其操作时序和MCS51系列单片机总线时序基础上，用具体电路讨论了MCS51系列单片机与DRAM内存条接口原理及方法。利用这种方法实现简单可靠，可使单片机系统拥有大容量的数据存储空间。
Based on the analysis of DRAM characteristics and operation timing and MCS51 series MCU bus timing, the principle and method of interface between MCS51 series MCU and DRAM memory module are discussed with concrete circuit. The use of this method to achieve simple and reliable, single-chip microcomputer system can have a large capacity of data storage space.