What are the machine cycle and the instruction cycle on SPMC65 family MCU?
Oscillator clock frequency (FOSC) and system clock frequency (FSYS) are different here. FOSC means input crystal frequency or external clock frequency. It is up to 16M Hz. Half of FOSC is FSYS, the working frequency of CPU and peripheral devices. The machine cycle is 1/FSYS for current micro-controller, i.e., the cycle of the CPU clock and that of system clock are 1/FSYS. Here, a CPU clock cycle is regarded as a cycle unit. If the cycle of an instruction is 3, it means that the current instruction running needs 3 CPU clock cycles, (i.e., FSYS clock cycle).
