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There's an internal oscillator on the uC.

"32kHz crystal increases MSP430 MCUs’ integrated digitally controlled oscillator to real-time accuracy for various peripherals and timers"

But even running at 32kHz you can do real work, probably even run a MUMPS deployment.

I haven't used any TI processors specifically, but most MCUs that run on a 32kHz crystal will only use that clock speed either in very low power operations, or as a timebase for a real-time (i.e., wall) clock. The processor has PLL circuitry inside it that will multiply the 32kHz into the MHz range and use that as the main CPU clock.

It has an internal clock source that can be multiplied up to different speeds. You can also connect external crystals or digital clocks.