Peripherals interconnect matrix RM0453
450/1461 RM0453 Rev 1
External clock LSE can be used as input to general-purpose timers (TIM2) on TIM2_ETR
pin (see TIM2 option register 1 (TIM2_OR1)).
Active power modes
Run, Sleep, LPRun, LPSleep
12.3.7 From RTC, TAMP, COMP1, COMP2 to low-power timers
(LPTIM1/LPTIM2)
Purpose
RTC alarm A/B, TAMP_IN1/2/3 input detection and COMP1/2_OUT can be used as trigger
to start LPTIM1/LPTIM2 counters.
Triggering signals
This trigger feature is described in Section 28.4.7: Trigger multiplexer (and following
sections).
The input selection is described in Table 192: LPTIM1 external trigger connection and
Table 193: LPTIM2 external trigger connection.
Active power modes
Run, Sleep, LPRun, LPSleep, Stop 0, Stop 1, Stop 2 (LPTIM1 only)
12.3.8 From timer (TIM1/TIM2) to comparators (COMP1/COMP2)
Purpose
Advanced-control timer (TIM1) and general-purpose timer (TIM2) can be used as blanking
window input to COMP1/COMP2.
The blanking function is described in Section 21.3.7: Comparator output blanking function.
The blanking sources are given in the following registers:
• COMP1 control and status register (COMP1_CSR) bits 20:18 BLANKING[2:0]
• COMP2 control and status register (COMP2_CSR) bits 20:18 BLANKING[2:0]
Triggering signals
Timer output signals TIMx_OCx are the inputs to blanking source of COMP1/COMP2.
Active power modes
Run, Sleep, LPRun, LPSleep
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