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这是芯片手册给出的单个IO输出电流相关参数
芯片VCCA侧采用3.3V供电，VCCB侧采用5V供电，如果VCCB方向从A到B,B侧每个IO输出，且同时输出，最大电流32mA。这样8个IO总共需要250mA电流
但是下面给出的IO最大才100mA,这样会不会有问题？
