ST STM32F40 Series

RM0090 General-purpose timers (TIM2 to TIM5)
Doc ID 018909 Rev 4 426/1422
Figure 122. Counter timing diagram, internal clock divided by 1
Figure 123. Counter timing diagram, internal clock divided by 2
Figure 124. Counter timing diagram, internal clock divided by 4
CK_INT
00
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
Counter overflow
Update event (UEV)
01 02 03 04 05 06 0732 33 34 35 3631
CK_INT
0035 0000 0001 0002 0003
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0034
0036
Counter overflow
Update event (UEV)
0000 0001
CNT_EN
TImer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0035
0036
Counter overflow
Update event (UEV)
CK_INT