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RM0453 Rev 5 947/1450

RM0453 Low-power timer (LPTIM)

972

28.4.3 LPTIM input and trigger mapping

The LPTIM external trigger and input connections are detailed hereafter.

Table 191. LPTIM internal signals

Names Signal type Description

lptim_pclk Digital input LPTIM APB clock domain

lptim_ker_ck Digital input LPTIM kernel clock

lptim_in1 Digital input Internal LPTIM input 1

lptim_in2 Digital input Internal LPTIM input 2

(1)

1. Only applies to LPTIM1

lptim_ext_trigx Digital input LPTIM external trigger input x

lptim_out Digital output LPTIM counter output

lptim_it Digital output LPTIM global interrupt

lptim_wakeup Digital output LPTIM wakeup event

Table 192. LPTIM1 external trigger connection

TRIGSEL External trigger

lptim_ext_trig0 GPIO pin as LPTIM1_ETR alternate function

lptim_ext_trig1 RTC ALARM A

lptim_ext_trig2 RTC ALARM B

lptim_ext_trig3 TAMP1 input detection

lptim_ext_trig4 TAMP2 input detection

lptim_ext_trig5 TAMP3 input detection

lptim_ext_trig6 comp1_out

lptim_ext_trig7 comp2_out

Table 193. LPTIM2 external trigger connection