Repetition Counter - ST STM32G0 1 Series Reference Manual

RM0444
25.4.3

Repetition counter

Section 25.4.1: Time-base unit
respect to the counter overflows. It is actually generated only when the repetition counter
has reached zero. This can be useful when generating PWM signals.
This means that data are transferred from the preload registers to the shadow registers
(TIMx_ARR auto-reload register, TIMx_PSC prescaler register, but also TIMx_CCRx
capture/compare registers in compare mode) every N counter overflows, where N is the
value in the TIMx_RCR repetition counter register.
The repetition counter is decremented at each counter overflow.
The repetition counter is an auto-reload type; the repetition rate is maintained as defined by
the TIMx_RCR register value (refer to
software (by setting the UG bit in TIMx_EGR register) or by hardware through the slave
mode controller, it occurs immediately whatever the value of the repetition counter is and the
repetition counter is reloaded with the content of the TIMx_RCR register.
General-purpose timers (TIM15/TIM16/TIM17)
describes how the update event (UEV) is generated with
Figure 246). When the update event is generated by
RM0444 Rev 5 751/1390
830