UM0306 Advanced control timer (TIM1)
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Figure 44. Update rate examples depending on mode and TIM1_RCR register
settings
Center-aligned mode
Edge-aligned mode
UEV
UEV
UEV
UEV
UEV
Update Event
: Preload registers transferred to active registers and update interrupt generated
Counter
TIM1_RCR = 0
TIM1_RCR = 1
TIM1_RCR = 2
TIM1_RCR = 3
Update Event
if the repetition down-counter underflow occurs when the counter is equal to
to the auto-reload value.
UEV
TIM1_RCR
= 3
and
re-synchronization
(by SW)
(by SW)
TIM1_CNT
(by SW)
Up-Counting Down-Counting