Hi, there,
'Cause we're requested to have +/1ppm accuracy of RTC by customer.
And the minimum tolerance of 32.768KHz crystal is +/-5ppm.
We'd like to confirm the 'Calibration' function on BQ32000.
There're options to select in the register.
If we select -4ppm, does that mean original +/-5ppm will be calibrated to +1ppm, -9ppm? Or both calibrated to 1ppm?
Please help to clarify our confusions.
Thanks in advance.
Regards.
Russ