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90UR908Q问题

Other Parts Discussed in Thread: DS90UR241

目前在用90UR908Q作一个产品,目标是把DS90UR241的信号解串.样板调试中发现了怪问题.怎么也调不通.偶然中发现,必须要把3.3V电源电压调到2.3V左右才能正常工作.此时所有功能正常.高于2.4V就不能正常工作.

检查电路又都是正确的.

请问一下为什么会出现这种现象.