SLAA380B December 2007 – September 2018 MSP430F2616 , MSP430F2617 , MSP430F2618 , MSP430F2619
On the Comparator_A of MSP430F16x devices, disabling the digital port functionality for an I/O pin by setting the associated bit in the Port Disable Register CAPD to prevent parasitic cross currents during analog measurements disables the digital CMOS input buffer. However, on MSP430F261x devices with Comparator_A+, setting a CAPDx bit disables both input and output buffer for that pin.