Peripherals interconnect matrix RM0440
390/2126 RM0440 Rev 4
11.3.6 From RTC, COMPx to low-power timer (LPTIM1)
RTC alarm A/B, RTC_TAMP1/2/3 input detection, COMPx_OUT can be used as trigger to
start LPTIM counters (LPTIM1).
Triggering signals
This trigger feature is described in Section 32.4.6: Trigger multiplexer (and following
sections).
The input selection is described in Table 310: LPTIM1 external trigger connection.
Active power mode
Run, Sleep, Low-power run, Low-power sleep, Stop 0, Stop 1.
Table 67. Interconnect 17
LPTIM trigger input signal (TRIGSEL[3:0]) LPTIM1 trigger source assignment
lptim1_ext_trig0 LPTIM1_ETR
lptim1_ext_trig1 rtc_alra_trg
lptim1_ext_trig2 rtc_alrb_trg
lptim1_ext_trig3 RTC_TAMP1
lptim1_ext_trig4 RTC_TAMP2
lptim1_ext_trig5 RTC_TAMP3
lptim1_ext_trig6 comp1_out
lptim1_ext_trig7 comp2_out
lptim1_ext_trig8 comp3_out
lptim1_ext_trig9 comp4_out
lptim1_ext_trig10 comp5_out
lptim1_ext_trig11 comp6_out
lptim1_ext_trig12 comp7_out
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