SLAZ102AB October 2012 – May 2021 CC430F6137
UCS Module
Functional
Digital Bypass mode prevents entry into LPM4
When entering LPM4, if an external digital input applied to XT1 in HF mode or XT2 is not turned off, the PMM does not switch to low-current mode causing higher than expected power consumption.
Before entering LPM4:
(1) Switch to a clock source other than external bypass digital input.
OR
(2) Turn off external bypass mode (UCSCTL6.XT1BYPASS = 0).