给负载的输入电压为5.5V,VDD电压3.3V。读取04寄存器,数值一直在变。
请教一下,怎么查原因?
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您好,
04寄存器上电默认值 [8A3h].
请参考芯片数据手册“Figure 6-22. I2C Read ”检查I2C通讯时序,注意一定要收到ACK.
LP8866-Q1 Automotive Display LED-backlight Driver with Six 200 mA Channels datasheet (Rev. C)