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LP8556的EPROM

Other Parts Discussed in Thread: LP8556

请问各位大侠!根据LP8556的DataSheet,用命令58h配置完相关寄存器就可以点亮背光了,但为何掉电之后配置就消失了呢,又要重新配置每个寄存器,是要进行什么操作才能更新到EPROM嘛?