ST STM32G471

RM0440 Rev 4 1235/2126
RM0440 General-purpose timers (TIM2/TIM3/TIM4/TIM5)
1343
Figure 359 and Figure 360 give some examples of the counter behavior when the prescaler
ratio is changed on the fly:
Figure 359. Counter timing diagram with prescaler division change from 1 to 2
MSv50998V1
tim_psc_ck
00
CEN
Counter register
Update event (UEV)
0
Prescaler control register
1
0
Write a new value in TIMx_PSC
Prescaler buffer
1
0
Prescaler counter
0
10
10
1
0
1
01
02
03
FA
FBF7 F8 F9 FC
tim_cnt_ck