Figure 128. Advanced-Control Timer Block Diagram - ST STM32WL55JC Reference Manual

Advanced-control timer (TIM1)
Figure 129. Counter timing diagram with prescaler division change from 1 to 2
Timerclock = CK_CNT
Counter register
Update event (UEV)
Prescaler control register
Prescaler counter
Figure 130. Counter timing diagram with prescaler division change from 1 to 4
Timerclock = CK_CNT
Update event (UEV)
Prescaler control register
Prescaler counter
726/1454
CK_PSC
CEN
F7
Write a new value in TIMx_PSC
Prescaler buffer
CK_PSC
CEN
Counter register
Write a new value in TIMx_PSC
Prescaler buffer
F8 F9 FA FB FC
0
0
0
F7 F8 F9 FA FB
0
0
0
RM0453 Rev 2
01
00
1
1
0 1 0 1 0
FC 00
3
3
0 1 2 3 0
RM0453
02
03
1 0 1
MS31076V2
01
1 2 3
MS31077V2