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1. SST39VF040的工作电压范围是2.7-3.6, 检查下芯片电源管脚的电压。
2. 如果你的430的电源盒SST39VF040的电源不是同一个的话,检查下430的管脚输出电压,SST39VF040的管脚输入电压不能超过VDD电压的0.5V。
3. 检查电路和虚焊。