This anomaly applies to IC Rev. Engineering A, build codes QKAA-AB0.
Application
LFRC frequency starts drifting even if calibration task is triggered.
LFRC frequency drifts. WDT and RTC may stop working even after soft reset.
Avoiding conditions that cause this anomaly. If the anomaly is triggered, do a pin reset, System OFF reset, application watchdog reset, or power cycle.