Figure 183. Counter Timing Diagram With Prescaler Division Change From 1 To 2; Figure 184. Counter Timing Diagram With Prescaler Division Change From 1 To 4 - ST STM32F205 series Reference Manual

Basic timers (TIM6 and TIM7)

Figure 183. Counter timing diagram with prescaler division change from 1 to 2

Timerclock = CK_CNT
Update event (UEV)
Prescaler control register
Prescaler counter

Figure 184. Counter timing diagram with prescaler division change from 1 to 4

Timerclock = CK_CNT
Update event (UEV)
Prescaler control register
486/1378
CK_PSC
CNT_EN
Counter register F7
Write a new value in TIMx_PSC
Prescaler buffer
CK_PSC
CNT_EN
Counter register
Write a new value in TIMx_PSC
Prescaler buffer
Prescaler counter
F8 F9 FA FB FC
0
0
0
F7 F8 F9 FA FB FC
0
0
0
RM0033 Rev 8
00 01 02
1
1
0 1 0 1
1 0
00
3
3
0 1 2 3 0 1
RM0033
03
1
0
MS31076V3
01
2 3
MS31077V3