【摘要】 SPI接口通讯主要用于单片机和外设以及单片机与单片机之间的高速数据传送,在控制领域有广泛的应用.介绍了AVR单片机SPI接口的工作原理,然后以ATMEL公司生产的AT90S4433单片机和AT45D081A存储器芯片为例具体介绍AVR单片机中SPI接口的使用,最后给出了在实际应用中的几点体会.更多还原

【Abstract】 In the control systems, SPI in microprocessor is mostly used to transmit data in high speed among the microprocessors and other electronic components.The operation principles of SPI in AVR microprocessor are introduced. Then, the implementation of AT90S4433 microprocessor with AT45D081A flash memory is described. Finally, some design experiences are given.更多还原