STM32F415OG datasheet(32/186 Pages) STMICROELECTRONICS

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Description

STM32F415xx, STM32F417xx

32/186

DocID022063 Rev 4

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.

General-purpose timers (TIMx)

There are ten synchronizable general-purpose timers embedded in the STM32F41x devices

(see Table 4 for differences).

•

TIM2, TIM3, TIM4, TIM5

The STM32F41x include 4 full-featured general-purpose timers: TIM2, TIM5, TIM3,

and TIM4.The TIM2 and TIM5 timers are based on a 32-bit auto-reload

up/downcounter and a 16-bit prescaler. The TIM3 and TIM4 timers are based on a 16-

bit auto-reload up/downcounter and a 16-bit prescaler. They all 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.

The TIM2, TIM3, TIM4, 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.

•

TIM9, TIM10, TIM11, TIM12, TIM13, and TIM14

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

TIM10, TIM11, TIM13, and TIM14 feature one independent channel, whereas TIM9

and TIM12 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. They can also be used as simple time bases.

Basic timers TIM6 and TIM7

These timers are mainly used for DAC trigger and waveform generation. They can also be

used as a generic 16-bit time base.

TIM6 and TIM7 support independent DMA request generation.

Independent watchdog

The independent watchdog is based on a 12-bit downcounter and 8-bit prescaler. It is

clocked from an independent 32 kHz internal RC and as it operates independently from the

main clock, it can operate in Stop and Standby modes. It can be used either as a watchdog

to reset the device when a problem occurs, or as a free-running timer for application timeout

management. It is hardware- or software-configurable through the option bytes.

Window watchdog

The window watchdog is based on a 7-bit downcounter that can be set as free-running. It

can be used as a watchdog to reset the device when a problem occurs. It is clocked from

the main clock. It has an early warning interrupt capability and the counter can be frozen in

debug mode.

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