Figure 191. Counter Timing Diagram, Internal Clock Divided By 1 - ST STM32WL55JC Reference Manual

RM0453 General-purpose timer (TIM2)
Figure 194. Counter timing diagram, internal clock divided by N
CK_PSC
Timerclock = CK_CNT
1F
Counter register 00
20
Counter overflow
Update event (UEV)
Update interrupt flag
(UIF)
MS31081V2
Figure 195. Counter timing diagram, Update event when ARPE=0 (TIMx_ARR not
preloaded)
CK_PSC
CEN
Timerclock = CK_CNT
31 32 33 34 35 36 00 01 02 03 04 05 06 07
Counter register
Counter overflow
Update event (UEV)
Update interrupt flag
(UIF)
Auto-reload preload
FF 36
register
Write a new value in TIMx_ARR
MS31082V2
RM0453 Rev 2 829/1454
893