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BQ25895配完参数后,断电重新上电,参数不能保存

Other Parts Discussed in Thread: BQ25895

您好!

BQ25895bqStudio执行Write Register操作对充电参数配置后,板子断电后,重新上电,是不是BQ25895寄存器里的参数就没有了?
我遇到的是重新上电后,读寄存器操作后,参数变成这种,请问是什么原因导致的?这种现象是否正常?
  • 您好,确保 VBAT有效,将watchdog关闭,参数就不会恢复为默认值。
  • 您好,谢谢回复!
    你的意思是是BQ25895芯片不断电是这意思吗?不断电参数是不会恢复成默认值,我想确认的是:参数配置完,把充电输入端和电池都移除,再给BQ25895重新上电(比如重新接充电输入端或者电池),之前配置的参数是不是都丢失了,芯片里的参数都恢复成默认值了?
  • 您好, 是的,满足下面两个条件就会回复默认参数。
    The registers reset to defaults under the following conditions:

    -VBUS below UVLO AND VBAT below UVLO

    -watchdog timer expires - note: you can disable the watchdog before CPU is powered down