Depending on the device variant (see Section 6), the device can support a low-frequency crystal (32 kHz) on the XT1 pins, a high-frequency crystal on the XT2 pins, or both. External bypass capacitors for the crystal oscillator pins are required.

It is also possible to apply digital clock signals to the XIN and XT2IN input pins that meet the specifications of the respective oscillator if the appropriate XT1BYPASS or XT2BYPASS mode is selected. In this case, the associated XOUT and XT2OUT pins can be used for other purposes. If they are left unused, they must be terminated according to Table 7-4.

Figure 10-2 shows a typical connection diagram.

Figure 10-2 Typical Crystal Connection

See MSP430 32-kHz Crystal Oscillators for more information on selecting, testing, and designing a crystal oscillator with the MSP430 devices.