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Advanced-control timers (TIM1/TIM8/TIM20) RM0440

1132/2126 RM0440 Rev 4

and the synchronous signals. In particular, if MOE is set to 1 whereas it was low, a delay

must be inserted (dummy instruction) before reading it correctly. This is because the write

acts on the asynchronous signal whereas the read reflects the synchronous signal.

The sources for break (tim_brk) channel are:

• External sources connected to one of the TIMx_BKIN pin (as per selection done in the

AFIO controller), with polarity selection and optional digital filtering

• Internal sources:

– coming from a tim_brk_cmpx input (refer to Section 28.3.2: TIM1/TIM8/TIM20 pins

and internal signals for product specific implementation)

– coming from a system break request (refer to Section 28.3.2: TIM1/TIM8/TIM20

pins and internal signals for product specific implementation)

The sources for break2 (tim_brk2) are:

• External sources connected to one of the TIMx_BKIN2 pin (as per selection done in the

AFIO controller), with polarity selection and optional digital filtering

• Internal sources coming from a tim_brk2_cmpx input (refer to Section 28.3.2:

TIM1/TIM8/TIM20 pins and internal signals for product specific implementation)

Break events can also be generated by software using BG and B2G bits in the TIMx_EGR

All sources are ORed before entering the timer tim_brk or tim_brk2 inputs, as per

Figure 316 below.

ST STM32G473 User Manual

Questions and Answers: