您好,瞬态可能太快而无法被 BQ76920 读取。 该器件将每 250ms 平均 50ms 的每个电池电压(请参阅 Table 1. Scheduling During Normal Mode Without Balancing of the Embedded Scheduler in Cell Battery Monitor of the bq769x0 application note for reference).
您好,您的理解是正确的。
请参考下面链接的5.1 How do I understand the data range of the CC?
https://www.ti.com.cn/cn/lit/ug/sluub41a/sluub41a.pdf?ts=1700221185126&ref_url=https%253A%252F%252Fwww.ti.com.cn%252Fproduct%252Fcn%252FBQ76920%253F_ticdt%253DMTcwMDIwODU3MXwwMThi…
您好,请参考数据手册8.3.1.3.4 Alert
In order to clear the ALERT signal, the source bit in the SYS_STAT register must first be cleared by writing a “1” to that bit. This will cause an automatic clear of the ALERT pin once all bits are cleared.
如果不能清除可能是硬件有问题或者noise…
Part Number: BQ76920 Other Parts Discussed in Thread: EV2400 刚设计的板子,上面使用了BQ7692003芯片做电源管理的相关功能,上电之后MCU通过对BQ76初始化,BQ76一直没有ACK响应,IIC总线使用逻辑分析仪捕获情况如下图所示
直接通过EV2400使用bq769X0 Evaluation Software软件读取也不能读到数据,读取显示如下图所示:
感觉BQ76没有工作起来,
板子电路设计原理图如下所示: