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BQ27541 通信不正常

Other Parts Discussed in Thread: EV2400

我们一个产品使用BQ27541,有出现芯片不良识别不到,或者偶尔能识别到偶尔识别不到。测量SCL和SDA的对地电阻值不正常。使用EV2400测试也是有的一直不识别,有的偶尔能识别到偶尔识别不到。

跟BQ27541通讯的单片机使用的5V供电,所以SCL和SDA是默认上拉到5V。