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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1131770/pca9535-pca9535-support-on-the-fly-change-or-not
降级器、
我是否知道 PCA9535支持在工作期间动态更改端口设置？
谢谢。
是；所有寄存器可随时写入。
