Figure 164. Counter Timing Diagram, Internal Clock Divided By N; Figure 165. Counter Timing Diagram, Update Event When Arpe=0 (Timx_Arr Not Preloaded) - ST STM32F446 Series Reference Manual

General-purpose timers (TIM2 to TIM5) RM0390

Figure 164. Counter timing diagram, internal clock divided by N

Figure 165. Counter timing diagram, Update event when ARPE=0 (TIMx_ARR not
preloaded)
526/1328 RM0390 Rev 4