SLAZ241O October 2012 – May 2021 MSP430F4783
FLL Module
Functional
Incorrect SMCLK request in low power modes
If SMCLK is configured to be sourced by XT2 and if bit SCG1=1 in SR (to enter specific low-power modes), SMCLK if not being used by any peripheral, should turn OFF when SMCLKOFF=1 (FLL_CTL1). However, SMCLK continues to remain active with no effect of SMCLKOFF=1.
To turn off SMCLK sourced by XT2 for specific low-power modes follow the sequence below:
1) Set SMCLKOFF=1
2) Configure SMCLK to be sourced by DCO (SELS=0)
3) Enter desired low-power mode