Advanced-control timers (TIM1&TIM8) RM0008
288/1096 Doc ID 13902 Rev 12
The following figures show some examples of the counter behavior for different clock
frequencies when TIMx_ARR=0x36.
Figure 61. Counter timing diagram, internal clock divided by 1
Figure 62. Counter timing diagram, internal clock divided by 2
Figure 63. Counter timing diagram, internal clock divided by 4
CK_PSC
36
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
Counter underflow (cnt_udf)
Update event (UEV)
35 34 33 32 31 30 2F04 03 02 01 0005
CK_PSC
0001 0036 0035 0034 0033
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0002
0000
Counter underflow
Update event (UEV)
CK_PSC
0036 0035
CNT_EN
Timer clock = CK_CNT
Counter register
Update interrupt flag (UIF)
0001
0000
Counter underflow
Update event (UEV)
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