[146] CLOCK: LFRC frequency deviation

This anomaly applies to Revision 3, build codes QFAA-Gx0, QFAB-Gx0, CIAA-Gx0.

It was inherited from the previous IC revision Revision 2.

Symptoms

The frequency tolerance (fTOL_CAL_LFRC) of the LFRC oscillator is exceeding 250 ppm.

Conditions

Always.

Consequences

Timers using LFRC are not as precise as described in the specification.

Workaround

Account for a frequency tolerance of 500 ppm when using the LFRC oscillator.

Parent topic: New and inherited anomalies