Errata nRF52832 - COMP: Reference ladder is not correctly calibrated

This anomaly applies to IC Rev. Engineering B, build codes QFAA-BA0, CHAA-AA0.

It was inherited from the previous IC revision Engineering A.

Symptoms

COMP does not compare correctly.

Always.

COMP module is unusable.

Execute the following code before enabling the COMP module:


*(volatile uint32_t *)0x40013540 = (*(volatile uint32_t *)0x10000324 & 0x00001F00) >> 8;