Hi teams,
We have been applying the BQ32000 to our products.
In some products manufactured last month, when the power was turned off, there was a problem of RTC reset.
As a result of the analysis, it was found that the OSC waveform level of the defective product was lower than that of the normal product.
The results of various environmental tests on defective products did not return to normal.
When the 'STOP' bit of SECONDS Reg. is changed to '1', it is confirmed that the OSC operation stops, and the IC seems to operate normally.
OSC operates when'STOP' bit of SECONDS Reg. is changed to '0'. However, the defect phenomenon remains the same.
However, when the auxiliary battery (CR2032) is removed and attached, it operates normally.
After normal operation, the defect phenomenon is not reproduced even in various tests.
what can be the reason for this phenomenon
Regards,