SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The microcontroller goes into hibernation if VDD is arbitrarily removed when the CLK32EN bit is set and any of the following bits are set:
The microcontroller wakes from hibernation when power is reapplied.
If the CLK32EN bit is set but the TPEN, PINWEN, and RTCEN bits are all clear, the microcontroller still goes into hibernation if power is removed; however, when VDD is reapplied, the MCU executes a cold POR and the Hibernation module is reset. If the CLK32EN bit is not set and VDD is arbitrarily removed, the part is simply powered off and executes a cold POR when power is reapplied.
If VDD is arbitrarily removed while a Flash memory or HIBDATA register write operation is in progress, the write operation must be retried after VDD is reapplied.