Figure 168. Lptim Output Waveform, Single Counting Mode Configuration; Figure 169. Lptim Output Waveform, Single Counting Mode Configuration - ST STM32F410 Reference Manual

RM0401 Low-power timer (LPTIM)

Figure 168. LPTIM output waveform, single counting mode configuration

- Set-once mode activated:
It should be noted that when the WAVE bit-field in the LPTIM_CFGR register is set, the Set-
once mode is activated. In this case, the counter is only started once following the first
trigger, and any subsequent trigger event is discarded as shown in Figure 169.

Figure 169. LPTIM output waveform, Single counting mode configuration

and Set-once mode activated (WAVE bit is set)
In case of software start (TRIGEN[1:0] = '00'), the SNGSTRT setting will start the counter for
one-shot counting.
Continous mode
To enable the continuous counting, the CNTSTRT bit must be set.
In case an external trigger is selected, an external trigger event arriving after CNTSTRT is
set will start the counter for continuous counting. Any subsequent external trigger event will
be discarded as shown in Figure 170.
In case of software start (TRIGEN[1:0] = '00'), setting CNTSTRT will start the counter for
continuous counting.
RM0401 Rev 3 455/771
472