RM0453 Rev 1 449/1461
RM0453 Peripherals interconnect matrix
453
12.3.4 From timer (LPTIM1/LPTIM2) to DAC
Purpose
Low-power timer LPTIM1/LPTIM2 can be used to generate an DAC trigger event.
DAC triggering is described in Section 19.4.7: DAC trigger selection.
Triggering signals
The output from low-power timer is on signals LPTIMx_OUT event.
The input to DAC is on signals dac_ch1_trg[15:0].
The connection between timers and DAC is provided in Table 114: DAC interconnection.
Active power modes
Run, Sleep, LPRun, LPSleep
12.3.5 From ADC to timer (TIM1)
Purpose
ADC can provide trigger event through watchdog signals to advanced-control timers (TIM1).
A description of the ADC analog watchdog setting is provided in Section 18.8.2: Analog
watchdog.
Trigger settings on the timer are provided in Section 25.3.4: External trigger input.
Triggering signals
The output (from ADC) is on signals ADC_AWDx_OUT, x = 1, 2, 3 (3 watchdogs on ADC)
and the input (to timer) on signal TIMx_ETR (external trigger).
Active power modes
Run, Sleep, LPRun, LPSleep
12.3.6 From HSE32, LSE, LSI, MSI, MCO, RTC to timers
(TIM2/TIM16/TIM17)
Purpose
External clocks (HSE32, LSE), internal clocks (LSI, MSI), microcontroller output clock
(MCO), GPIO and RTC wakeup interrupt can be used as input to general-purpose timers
(TIM16/17) channel 1.
This makes possible calibration of the HSI16/MSI system clocks (with TIM16 and LSE) or of
the LSI (with TIM16 and HSE32). This is also used to precisely measure LSI (with TIM16
and HSI16) or MSI (with TIM17 and HSI16) oscillator frequency.
When the low-speed external (LSE) oscillator is used, no additional hardware connections
are required.
This feature is described in Section 7.2.20: Internal/external clock measurement with
TIM16/TIM17.
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