[132] CLOCK: The LFRC oscillator might not start

This anomaly applies to IC Rev. Engineering C, build codes QFAA-BB0, CIAA-BA0.

Symptoms

The LFRC oscillator does not start and the LFCLKSTARTED event is not triggered.

Conditions

The LFRC oscillator is started in the window [66 µs, 138 µs] after the LFRC oscillator has stopped.

Consequences

The LFRC oscillator might become non-functional until it is reset.

Workaround

Delay starting the LFRC oscillator if it was last stopped [66 µs, 138 µs] ago.