STM32H757AI datasheet(44/251 Pages) STMICROELECTRONICS

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Functional overview

STM32H757xI

44/251

DS12931 Rev 1

3.30.2

Advanced-control timers (TIM1, TIM8)

The advanced-control timers (TIM1, TIM8) can be seen as three-phase PWM generators

multiplexed on 6 channels. They have complementary PWM outputs with programmable

inserted dead times. They can also be considered as complete general-purpose timers.

Their 4 independent channels can be used for:

•

Input capture

•

Output compare

•

PWM generation (Edge- or Center-aligned modes)

•

One-pulse mode output

If configured as standard 16-bit timers, they have the same features as the general-purpose

TIMx timers. If configured as 16-bit PWM generators, they have full modulation capability (0-

100%).

The advanced-control timer can work together with the TIMx timers via the Timer Link

feature for synchronization or event chaining.

TIM1 and TIM8 support independent DMA request generation.

3.30.3

General-purpose timers (TIMx)

There are ten synchronizable general-purpose timers embedded in the STM32H757xI

devices (see Table 5 for differences).

•

TIM2, TIM3, TIM4, TIM5

The devices include 4 full-featured general-purpose timers: TIM2, TIM3, TIM4 and

TIM5. TIM2 and TIM5 are based on a 32-bit auto-reload up/downcounter and a 16-bit

prescaler while TIM3 and TIM4 are based on a 16-bit auto-reload up/downcounter and

a 16-bit prescaler. All timers feature 4 independent channels for input capture/output

compare, PWM or One-pulse mode output. This gives up to 16 input capture/output

compare/PWMs on the largest packages.

TIM2, TIM3, TIM4 and TIM5 general-purpose timers can work together, or with the

other general-purpose timers and the advanced-control timers TIM1 and TIM8 via the

Timer Link feature for synchronization or event chaining.

Any of these general-purpose timers can be used to generate PWM outputs.

TIM2, TIM3, TIM4, TIM5 all have independent DMA request generation. They are

capable of handling quadrature (incremental) encoder signals and the digital outputs

from 1 to 4 hall-effect sensors.

•

TIM12, TIM13, TIM14, TIM15, TIM16, TIM17

These timers are based on a 16-bit auto-reload upcounter and a 16-bit prescaler.

TIM13, TIM14, TIM16 and TIM17 feature one independent channel, whereas TIM12

and TIM15 have two independent channels for input capture/output compare, PWM or

One-pulse mode output. They can be synchronized with the TIM2, TIM3, TIM4, TIM5

full-featured general-purpose timers or used as simple timebases.

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