Datasheet

Functional overview STM32L431xx
38/200 DocID028800 Rev 1
3.22.2 General-purpose timers (TIM2, TIM15, TIM16)
There are up to three synchronizable general-purpose timers embedded in the
STM32L431xx (see
Table 9 for differences). Each general-purpose timer can be used to
generate PWM outputs, or act as a simple time base.
• TIM2
It is a full-featured general-purpose timer:
TIM2 has a 32-bit auto-reload up/downcounter and 32-bit prescaler.
This timer features 4 independent channels for input capture/output compare, PWM or
one-pulse mode output. It can work with the other general-purpose timers via the Timer
Link feature for synchronization or event chaining.
The counter can be frozen in debug mode.
It has independent DMA request generation and support quadrature encoder.
• TIM15 and 16
They are general-purpose timers with mid-range features:
They have 16-bit auto-reload upcounters and 16-bit prescalers.
– TIM15 has 2 channels and 1 complementary channel
– TIM16 has 1 channel and 1 complementary channel
All channels can be used for input capture/output compare, PWM or one-pulse mode
output.
The timers can work together via the Timer Link feature for synchronization or event
chaining. The timers have independent DMA request generation.
The counters can be frozen in debug mode.
3.22.3 Basic timers (TIM6 and TIM7)
The basic timers are mainly used for DAC trigger generation. They can also be used as
generic 16-bit timebases.
3.22.4 Low-power timer (LPTIM1 and LPTIM2)
The devices embed two low-power timers. These timers have an independent clock and are
running in Stop mode if they are clocked by LSE, LSI or an external clock. They are able to
wakeup the system from Stop mode.
LPTIM1 is active in Stop 0, Stop 1 and Stop 2 modes.
LPTIM2 is active in Stop 0 and Stop 1 mode.
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