Low-power timer (LPTIM) RM0440
1466/2126 RM0440 Rev 4
32.4.3 LPTIM reset and clocks
The LPTIM can be clocked using several clock sources. It can be clocked using an internal
clock signal which can be chosen among APB, LSI, LSE or HSI16 sources through the
Reset and Clock controller (RCC). Also, the LPTIM can be clocked using an external clock
lptim_ext_trig3 RTC_TAMP1_OUT
lptim_ext_trig4 RTC_TAMP2_OUT
lptim_ext_trig5 RTC_TAMP3_OUT
lptim_ext_trig6 COMP1_OUT
lptim_ext_trig7 COMP2_OUT
lptim_ext_trig8 COMP3_OUT
lptim_ext_trig9 COMP4_OUT
lptim_ext_trig10 COMP5_OUT
lptim_ext_trig11 COMP6_OUT
lptim_ext_trig12 COMP7_OUT
Table 311. LPTIM1 input 1 connection
lptim_in1_mux LPTIM1 input 1 connected to
lptim_in1_0 GPIO pin as LPTIM1_IN1 alternate function
lptim_in1_1 COMP1
lptim_in1_2 COMP3
lptim_in1_3 COMP5
lptim_in1_4 COMP7
Table 312. LPTIM1 input 2 connection
lptim_in2_mux LPTIM1 input 2 connected to
lptim_in2_0 GPIO pin as LPTIM1_IN2 alternate function
lptim_in2_1 COMP2
lptim_in2_2 COMP4
lptim_in2_3 COMP6
lptim_in2_4 COMP6
Table 310. LPTIM1 external trigger connection (continued)
TRIGSEL External trigger
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