STM32W108C8

STM32W108C8
General-purpose timers
Figure 35 shows some center-aligned PWM waveforms in an example where:
● TIMx_ARR = 8,
● PWM mode is the PWM mode 1,
●
The output compare flag is set when the counter counts down corresponding to the
center-aligned mode 1 selected for TIM_CMS = 01 in the TIMx_CR1 register.
Figure 35. Center-aligned PWM waveforms (ARR = 8)
Hints on using center-aligned mode:
●
●
When starting in center-aligned mode, the current up-down configuration is used. This
means that the counter counts up or down depending on the value written in the
TIM_DIR bit in the TIMx_CR1 register. The TIM_DIR and TIM_CMS bits must not be
changed at the same time by the software.
Writing to the counter while running in center-aligned mode is not recommended as it
can lead to unexpected results. In particular:
Doc ID 018587 Rev 2 128/215