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BQ3060应用问题

Other Parts Discussed in Thread: BQ3060, EV2400

请问怎么判断BQ3060是否正常工作?测得每个脚的电压都在正常范围,REG27和RBI都输出2.7v,除了CHG,这个电压等于PACK,和手册上不一样,用MCU去读数据,一直读不出来,看波形发现芯片没有应答,想问芯片是否在工作?