Peripherals interconnect matrix RM0351
290/1693 DocID024597 Rev 3
Triggering signals
The output (from timer) is on signal TIMx_TRGO/TIMx_TRGO2 or TIM16_OC1.
The input (on DFSDM) is on signal DFSDM_INTRG[0:8].
The connection between timers, EXTI and DFSDM is provided in Table 122: DFSDM
triggers connection.
Active power mode
Run, Sleep, Low-power run, Low-power sleep.
9.3.6 From DFSDM to timer (TIM1/TIM8/TIM15/TIM16/TIM17)
Purpose
DFSDM can generate a timer break on advanced-control timers (TIM1/TIM8) and general-
purpose timers (TIM15/TIM16/TIM17) when a watchdog is activated (minimum or maximum
threshold value crossed by analog signal) or when a short-circuit detection is made.
DFSDM watchdog is described in Section 21.3.10: Analog watchdog.
DFSDM short-circuit detection is described in Section 21.3.11: Short-circuit detector.
Timer break is described in:
• Section 26.3.16: Using the break function (TIM1/TIM8)
• Section 28.4.13: Using the break function (TIM15/TIM16/TIM17)
Triggering signals
The output (from DFSDM) is on signals DFSDM_BREAK[0:3] directly connected to timer
and ‘Ored’ with other break input signals of the timer.
Active power mode
Run, Sleep, Low-power run, Low-power sleep.
9.3.7 From HSE, LSE, LSI, MSI, MCO, RTC to timer
(TIM2/TIM15/TIM16/TIM17)
Purpose
External clocks (HSE, LSE), internal clocks (LSI, MSI), microcontroller output clock (MCO),
GPIO and RTC wakeup interrupt can be used as input to general-purpose timer
(TIM15/16/17) channel 1.
This allows to calibrate the HSI16/MSI system clocks (with TIM15/TIM16 and LSE) or LSI
(with TIM16 and HSE). This is also used to precisely measure LSI (with TIM16 and HSI16)
or MSI (with TIM17 and HSI16) oscillator frequency.
When Low Speed External (LSE) oscillator is used, no additional hardware connections are
required.
This feature is described in Section 6.2.16: Internal/external clock measurement with
TIM15/TIM16/TIM17.
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