AT25256与XC886的接口设计与实现  

Interface Design and Implementation Between XC886 and AT25256

作　　者：黄俭波[1] 朱文[1] 

机构地区：[1]重庆大学机械工程学院,重庆400045

出　　处：《机械与电子》2011年第5期56-59,共4页Machinery & Electronics

摘　　要：针对XC886处理器芯片容量有限并且急需扩展容量的问题,提出了在芯片的外部添加E2PROM存储器.以E2PROM AT25256为例,利用其兼容SPI的通讯方式,选定XC886和AT25256之间为SPI通讯.介绍了XC886和AT25256之间的硬件设计、软件设计和程序流程图,解决了类似XC886处理器芯片不含有E2PROM或者E2PROM存储器存储单元不足的情况.For the defect of XC886 processor chip does not contain E2PROM,and the status that XC886 the processor chip has limited capacity,the chip is proposed to add an external E2PROM memory.To E2PROM AT25256 for example,it compatible SPI communication mode,select between the XC886 and AT25256 for the SPI communication.Introduced between the XC886 and the AT25256 hardware design,software design and software flow chart.Solved the similar status that XC886 processor chip does not contain E2PROM or E2PROM memory storage unit shortage.

关 键 词：同步串行接口 电可擦可编程只读存储器 数据存储 AT25256 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构]