【導(dǎo)讀】USB接口芯片集成了MCU·················2. 2.系統(tǒng)設(shè)計原理·························3. 3.單元模塊設(shè)計·························4. USB硬件電路設(shè)計·······················4. 單片機(jī)最小系統(tǒng)模塊···················5