ST STM32F105 series

General-purpose timers (TIM2 to TIM5) RM0008
371/1128 DocID13902 Rev 15
Figure 115. Counter timing diagram, internal clock divided by 2
Figure 116. Counter timing diagram, internal clock divided by 4, TIMx_ARR=0x36
1. Center-aligned mode 2 or 3 is used with an UIF on overflow.
Figure 117. Counter timing diagram, internal clock divided by N
0002 0000 0001 0002 0003
CNT_EN
TImer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0003
0001
Counter underflow
Update event (UEV)
CK_INT
CK_INT
0036 0035
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0034
0035
Counter overflow (cnt_ovf)
Update event (UEV)
Timer clock = CK_CNT
Counter register
00
20
1F
Update interrupt flag (UIF)
Counter underflow
Update event (UEV)
CK_INT
01