SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The Hibernation module comes out of reset with the system clock enabled to the module, but if the system clock to the module has been disabled, then it must be re-enabled, even if the RTC feature is not used. See Section 4.2.90.
If a 32.768-kHz crystal is used as the Hibernation module clock source, perform the following steps:
If a 32.768-kHz single-ended oscillator is used as the Hibernation module clock source, then perform the following steps:
If the internal low frequency oscillator is used as the Hibernation module clock source, then perform the following steps:
The above steps are only necessary when the entire system is initialized for the first time. If the microcontroller has been in hibernation, then the Hibernation module has already been powered up and the above steps are not necessary. The software can detect that the Hibernation module and clock are already powered by examining the CLK32EN bit of the HIBCTL register.