Datasheet

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STM32L452xx Functional overview
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3.23.1 Advanced-control timer (TIM1)
The advanced-control timer can each be seen as a three-phase PWM multiplexed on 6
channels. They have complementary PWM outputs with programmable inserted dead-
times. They can also be seen as complete general-purpose timers. The 4 independent
channels can be used for:
• Input capture
• Output compare
• PWM generation (edge or center-aligned modes) with full modulation capability (0-
100%)
• One-pulse mode output
In debug mode, the advanced-control timer counter can be frozen and the PWM outputs
disabled to turn off any power switches driven by these outputs.
Many features are shared with those of the general-purpose TIMx timers (described in
Section 3.23.2) using the same architecture, so the advanced-control timer can work
together with the TIMx timers via the Timer Link feature for synchronization or event
chaining.
3.23.2 General-purpose timers (TIM2, TIM3, TIM15, TIM16)
There are up to three synchronizable general-purpose timers embedded in the
STM32L452xx (see
Table 11 for differences). Each general-purpose timer can be used to
generate PWM outputs, or act as a simple time base.
• TIM2, TIM3
They are full-featured general-purpose timers:
– TIM2 has a 32-bit auto-reload up/downcounter and 32-bit prescaler.
– TIM3 has 16-bit auto-reload up/downcounter and 16-bit prescaler.
These timers feature 4 independent channels for input capture/output compare, PWM
or one-pulse mode output. They can work with the other general-purpose timers via the
Timer Link feature for synchronization or event chaining.
The counters can be frozen in debug mode.
All have 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.
3.23.3 Basic timer (TIM6)
The basic timer is mainly used for DAC trigger generation. It can also be used as generic
16-bit timebase.
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