STM32W108C8

General-purpose timers
STM32W108C8
When an update event occurs, the update flag (the INT_TIMUIF bit in the INT_TIMxFLAG
register) is set (unless TIM_USR is 1) and the following registers are updated:
● The buffer of the prescaler is reloaded with the buffer value (contents of the TIMx_PSC
register).
● The auto-reload shadow register is updated with the buffer value (TIMx_ARR).
Figure 15, Figure 16, Figure 17, and Figure 18 show some examples of the counter
behavior for different clock frequencies when TIMx_ARR = 0x36.
Figure 15. Counter timing diagram, internal clock divided by 1
Figure 16. Counter timing diagram, internal clock divided by 4
113/215 Doc ID 018587 Rev 2