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BQ32000: BQ32000

Thenmozhi V
Prodigy 20 points
Part Number: BQ32000

In External RTC BQ32000 facing issues.

while reading the minutes register(0x01) we found that the oscillator failure flag(OF) is set.But the time was incremented properly.
As per the data sheet if flag is set it can be cleared through serial interface.
But As we observed that the occurence of the failure flag is random

So, We need to know the probable outcome of the below mentioned instances

1. Since the time is updating properly, what will happen if we didn't clear oscillator failure flag(OF) register.

2. Is clearing the flag is mandatory?

3. What if the failure Flag occurrence is very frequent

  • 0
    TI__Guru* 86610 points

    Hi Thenmozhi,

    OF is just a bit to alert the user, it will not trigger anything to interrupt the operation. However, if you do not clear this flag, it will stay =1 and you will lose real time monitoring capability. This flag is set when it detects some oscillation issue. So you can try, if this flag will toggle frequently at different temperature. If this is the case, you might have oscillation issue. From some of the history E2E posts, some users reported that after changing the crystal, problem is fixed. Worth to try.