SLAZ150I October 2012 – May 2021 MSP430F169
BCL Module
Functional
RSELx bit modifications can generate high frequency spikes on MCLK
When DIVMx = 00 or 01 the RSELx bits of the Basic Clock Module are incremented or decremented in steps of 2 or greater, the DCO output may momentarily generate high frequency spikes on MCLK, which may corrupt CPU operation. This is not an issue when DIVMx = 10 or 11.
Set DIVMx = 10 or 11 to divide the MCLK input prior to modifying RSELx. After the RSELx bits are configured as desired, the DIVMx setting can be changed back to the original selection.