SLAU947 October 2024
The internal SYSOSC is 32MHz by default with an accuracy of 2.5%. The MCLK is sourced by the SYSOSC by default. The SYSPLL can be used to generate a clock signal up to 80MHz, which can be used to source MCLK. CPUCLK is sourced directly from MCLK in RUN mode and disabled in other modes. The low-power clock (ULPCLK) can be sourced by MCLK and active in RUN and SLEEP mode by configuration. The part also includes an internal 32kHz oscillator, LFOSC, which is the default low frequency source. Included on the LaunchPad are two clock crystal options, one high-frequency 40MHz crystal (HFXT), and one low-frequency 32.768kHz crystal (LFXT). The crystals can be selected during application programming as the clock source for the high frequency and low frequency clocks. For more clock tree details, see the Clock Module (CKM) section of the MSPM0 G-Series Microcontrollers Technical Reference Manual..