Atmega64单片机程序（完整工程），包含SD HOST的驱动、FAT（使用ZLG的FAT），点阵的液晶屏显示驱动，带演示和测试菜单-Singlechip Atmega64 procedures (complete works), including SD HOST driver, FAT (use ZLG the FAT), dot-matrix LCD display driver, with demo and test the menu