[1] REGULATORS: VREGH short circuit protection is not functional

This anomaly applies to IC Rev. Engineering A, build codes QKAA-AB0.

Domains

Application

Conditions

Device operates in high voltage mode, DC/DC mode is enabled in VREGH, and external circuitry supply is enabled. VDD output voltage is programmed to 2.7 V or lower using UICR.VREGHVOUT. VDD is short-circuited.

Consequences

Excessive current consumption.

Workaround

Perform one of the following workarounds.
  • Program VDD output voltage to 3 V or higher using UICR.VREGHVOUT.
  • Disable DC/DC mode in VREGH regulator.