STM32U535NET6QTR datasheet(71/278 Pages) STMICROELECTRONICS

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DS14217 Rev 1

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STM32U535xx

Functional overview

3.36.2

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

TIM16,TIM17)

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

STM32U535xx devices (see Table 19 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 with 32-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.

3.36.3

Basic timers (TIM6 and TIM7)

The basic timers are mainly used for DAC trigger generation. They can also be used as

generic 16-bit timebase.

3.36.4

Low-power timers (LPTIM1, LPTIM2, LPTIM3, LPTIM4)

The devices embed four low-power timers. These timers have an independent clock and are

running in Stop mode if they are clocked by HSI16, MSI, LSE, LSI or an external clock. They

are able to wake up the system from Stop mode.

LPTIM1, LPTIM3, and LPTIM4 are active in Stop 0, Stop 1 and Stop 2 modes.

LPTIM2 is active in Stop 0 and Stop 1 mode.

The low-power timer supports the following features:

•

16-bit up counter with 16-bit autoreload register

•

3-bit prescaler with eight possible dividing factors (1, 2, 4, 8, 16, 32, 64, 128)

•

Selectable clock

–

Internal clock sources: LSE, LSI, HSI16, MSIK (LPTIM1, LPTIM3, LPTIM4 only) or

APB clock (LPTIM2 only)

–

External clock source over LPTIM input (working with no LP oscillator running,

used by Pulse Counter application)

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