How many clock source for SPMC65 family MCU?
The PMC65 family MCU supports 3 clock resources: Crystal / Ceramic Resonator, RC oscillator, and external clock input. Different clock input can be selected via setting P_MO($7FE0). Note: If Crystal / Ceramic Resonator or external clock input are selected as the clock input source, the clock frequency will be divided by 2 to be the system clock frequency (FSYS) for the CPU. Therefore, if we wan to get 8M Hz system clock, Crystal / Ceramic Resonator or external clock must be set to16M Hz.
