STM32L552CC_V01 datasheet(69/340 Pages) STMICROELECTRONICS

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DS12737 Rev 6

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STM32L552xx

Functional overview

3.30.2

General-purpose timers (TIM2, TIM3, TIM4, TIM5, TIM15, TIM16,

TIM17)

There are up to seven synchronizable general-purpose timers embedded in the

STM32L552xx devices (see Table 16 for differences).

Each general-purpose timer can be used to generate PWM outputs, or act as a simple time

base.

•

TIM2, TIM3, TIM4 and TIM5

They are full-featured general-purpose timers:

–

TIM2 and TIM5 have a 32-bit auto-reload up/downcounter and 32-bit prescaler

–

TIM3 and TIM4 have 16-bit auto-reload up/downcounter and 16-bit prescaler.

These timers feature four independent channels for input capture/output compare,

PWM or one-pulse mode output. They can work together, or 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 encoders.

•

TIM15, 16 and 17

They are general-purpose timers with mid-range features:

They have 16-bit auto-reload upcounters and 16-bit prescalers.

–

TIM15 has two channels and one complementary channel

–

TIM16 and TIM17 have one channel and one 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.

3.30.3

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.

3.30.4

Low-power timers (LPTIM1, LPTIM2 and LPTIM3)

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 and LPTIM3 are active in Stop 0, Stop 1 and Stop 2 modes.

LPTIM2 is active in Stop 0 and Stop 1 mode.

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