[30] CLOCK, GRTC: GRTC operates incorrectly at low temperature

nRF54LM20A Revision 1 Errata

This anomaly applies to Revision 1, build code PAAA-B00.

It was inherited from the previous SoC revision Engineering B.

Symptoms

GRTC drifts in frequency at low temperature.

Conditions

The system is using HFINT.

Consequences

Applications with real-time requirements can behave unexpectedly.

Workaround

A workaround is implemented in nRF Connect SDK 2.8.0 and later when MPSL is used.

A generic workaround is implemented in nRF Connect SDK 3.0.0 and later.