Hello Bob, This maybe an issue of interrupt priority here. Can you double check which CCR belongs to which timer? In order to have separate time bases, you need to use two different timers. TimerA0 cannot be clocked by a 16kHz ACLK and a 135kHZ INCLK. You could have TimerA0 clocked by ACLK and have Timer A1 clocked by INCLK. Please see the Timer_A Block Diagram found in the User Guide for more information. It is located at the beginning of the Timer_A section.
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