SD卡的相关资料关于SD卡的读于写的操作，及其原理结构-Relevant information on the SD card SD card read in the write operation, and the principle structure

该文档介绍了SD卡的一般原理及相关结构，包括IO口的介绍等，文档内部赋有SD相关的Atmega128单片机读写程序，希望对你有帮助-This document describes the general principles of the SD card and related structures, including the introduction of IO port within the document are endowed with SD Related Atmega128 mi