K9F1208在DS87C520单片机系统中的应用

The application of NAND Flash K9F1208 in DS87C520 singlechip system

介绍了Samsung公司生产的NAND Flash K9F1208的特性：存储结构为528字节×32页×4096块，工作电压为2．7～3．6V，可实现页的读取、写入、擦除等操作；结合时序讨论了K9F1208的页读取／页写入操作模式；分析了单片机DS87C520的特点：高速，双数据指针，13个中断源，电源电压下降自动复位，可编程看门狗定时器；给出了KgF1208与DS87C520的硬件连接、程序框图和部分程序代码．提出了任何一款数据总线宽度在8位及8位以上的计算机系统都能使用K9F1208的方法，从而实现大容量存储系统的扩展．

This article introduces the NAND Flash K9F1208＇s characteristics produced by Samsung Corp, in which memory organization is 528bytes × 32pages× 4096blocks,the voltage supply is 2.7-3.6 V,and the page read and program operation can be realized. The page read and program operation mode was discussed combined sequence. The characteristics of DS87C520 singlechip system with high speed, double data pointer, 13 interrupt sources, power supply decline auto reset, and watch dog timer were analyzed. The connection diagram of hardware and software design and some program codes were given. The innovation of this paper is the author proposed an universal method that any computer system with data bus width at 8 bit and upwards can use K9F1208,implemented the high capacity memory system extend accordingly.