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BQ76930的库仑计的用法

Other Parts Discussed in Thread: BQ76930

从BQ76930的规格书看,库仑计是一个16位宽的累加器,积分时间是250mS。

请教两个问题:
1. 规格书10.3.1.1.3(P23)的表格中说CC reading的单位是uV,库仑计不是电流么?
2. 表格中的数据有正有负,正的是代表充电,还是放电的?规格书中的哪个地方有说明?

谢谢!