摘要
介绍了C80 5 1F0 2 0单片机SPI模块的内部结构和相关配置寄存器的定义和使用 ,以及SPI串行Flash存储器AT4 5DB0 81B的外部引脚、存储空间的划分和相应的软件操作指令 ;着重阐述C80 5 1F0 2 0与AT4 5DB0 81B之间的接口技术 ,包括硬件连线方法、硬件连线及配置中需要注意的问题。
In this paper, it is introduced first the SPI module in Cygnal's microcontroller C8051F020, including its block diagram, definition and operation of configuration registers associated. Then the external pinouts, division of memory space and corresponding software commands of Atmel's SPI flash memory AT45DB081B are described in detail. The emphasis is put on the interface technology between C8051F020 and AT45DB081B, hardware interconnection scheme and key points of attention. The software driver and its test routine are all dealt with thoroughly in this paper.
出处
《电子工程师》
2004年第7期61-64,共4页
Electronic Engineer