ST STM32F301 6 Series Reference Manual page 501

RM0366
Figure 200. Counter timing diagram with prescaler division change from 1 to 2
Timerclock = CK_CNT
Counter register
Update event (UEV)
Prescaler control register
Prescaler buffer
Prescaler counter
Figure 201. Counter timing diagram with prescaler division change from 1 to 4
Timerclock = CK_CNT
Update event (UEV)
Prescaler control register
Prescaler counter
CK_PSC
CEN
F7
Write a new value in TIMx_PSC
CK_PSC
CEN
Counter register
Write a new value in TIMx_PSC
Prescaler buffer
General-purpose timers (TIM15/TIM16/TIM17)
F8 F9 FA FB FC
0
0
0
F7 F8 F9
FA FB
0
0
0
RM0366 Rev 5
01
00
1
1
0 1 0
1 0
FC 00
3
3
0 1 2 3 0
02 03
1 1
0
MS31076V2
01
1 2 3
MS31077V2
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