SLAZ316AC October 2012 – September 2021 MSP430F5631
EEM Module
Debug
LPMx.5 debug limitations
Debugging the device in LPMx.5 mode might wake the device up from LPMx.5 mode inadvertently, and it is possible that the device enters a lock-up condition; that is, the device cannot be accessed by the debugger any more.
Follow the debugging steps in Debugging MSP430 LPM4.5 SLAA424 .