norflash nandflash毕业论文.docVIP

湖 北 大 学 本 科 毕 业 论 文 （设 计） 题 目 税控机软件测试—— 基于44B0的Nandflash底层驱动程序设计 姓 名 解添津 学 号 2006221105220017 专业年级 06级电子科学与技术 指导教师 陈 勇 职 称 讲 师 2010年05月08日 目录 44B0的Nandflash底层驱动程序设计 摘要三星公司推出的16/32位RISC处理器S3C44B0X为手持设备和一般类型应用提供了高性价比和高性能的微控制解决方案。为了降低成本，S3C44B0X提供了丰富的内置部件。但是唯一的不足，就是没有Nandflash的专用控制器。而Nandflash由于其低成本以及大容量，已经广泛的应用到U盘，SD卡，固态硬盘中去。而在S3C44BOX的设计中，一味的使用NOR FLASH，对于大数据的存储是相当不利的。文章通过对Nandflash的时序模拟，通过NorFlash中的底层程序引导Nandflash的操作，使S3C44B0X也能与Nandflash连接，从而可以实现存储，读取内部的数据。可以开发板上实现，通过串口在windows中的超级终端显示读出的数据，以及写后再读出操作的数据，以证实确对Nandflash进行了读写擦等操作的执行。文章最后对所做的工作和取得的结论进行了总结。 Nandflash ARM7 S3C44B0X 块 页 字节 Software Testing Fiscal Cash Register ——Drive Program Design According to the Nandflash first floor with of 44B0 Abstract Three star companies release of 16/32 RISC processor S3C44B0X for held equipments and general type application to provide Gao Xing4 Jia4 ratio and high performance of tiny control solution.For decline low cost, the S3C44B0X’s provided abundantly inside place a parts, such as:8 KB cache, internal SRAM, LCD controller.But the only shortage be the appropriation controller which has no Nandflash.But Nandflash because it low cost and big capacity, have already extensively applied to U dish, SD card, go to in the solid hard drive.But persistently use NOR FLASH in the S3C44BOXs design, for big data of saving is very disadvantageous.The article passes to imitate the Nandflash cycle time, pass the operation of the leading Nandflash of the first floor procedure in the NorFlash and make the S3C44B0Xs can also link with Nandflash, keep both keep and read internal data.Combine in developping plank realization, and pass a string of data that reads in the super terminal manifestation in the windows, and write after read again the data for operate really carried on to read to the Nandflash by confirm, write and wipe etc. operation of performance.Article end to the work do with obtain of the concl