电容式触摸屏嵌入式闪存控制电路的设计与实现  

Design and Implementation of Embedded Flash Controller in Capacitive Touch Panel

作　　者：张明[1] 于奇[1] 张弛 陈友波 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054 [2]深圳贝特莱电子科技有限公司,广东深圳518057

出　　处：《微电子学》2013年第5期657-660,666,共5页Microelectronics

基　　金：中央高校基本科研业务费专项资金资助(ZYGX2010J040)

摘　　要：通过研究嵌入式闪存结构和接口及其时序信息,结合电容式触摸屏的应用环境,同时考虑闪存测试的需求,设计并实现了一种嵌入式闪存专用控制电路。设计以I2 C(Inter-Integrated Circuit)总线作为与主机的接口,定义了一套操作指令,实现了主机对闪存的读写和擦除等基本操作,完成了RTL(Register Transfer Level)代码编写。基于Ncsim仿真软件对电路进行功能仿真,结果表明,电路工作状态转换正常,可以进入测试模式进行测试,主机与MCU(Micro Controller Unit)都可以正常读写和擦除闪存。The structure of embedded flash system and its interface and timing information were studied, and a control circuit was designed and implemented with application environment of capacitive touch panel and the requirement of flash memory test taken into consideration. With a set of instructions, programming, writing and erasing operations of embedded flash memory could be executed by host through I^2C bus. RTL （Register Transfer Level） coding was completed in the design. Functional simulation was made with Ncsim. Results showed that the circuit could change work-state properly to perform test by entering test mode. Both host and MCU could read, write and erase the flash memory properly.

关 键 词：电容式触摸屏 嵌入式闪存 闪存测试 内置集成电路总线 微控制器 

分 类 号：TN432[电子电信—微电子学与固体电子学]