STM32F030R8 datasheet(20/93 Pages) STMICROELECTRONICS

20 / 93 page

Functional overview

STM32F030x4/x6/x8/xC

20/93

DS9773 Rev 4

3.11.2

General-purpose timers (TIM3, TIM14..17)

There are four or five synchronizable general-purpose timers embedded in the

STM32F030x4/x6/x8/xC devices (see Table 5 for differences). Each general-purpose timer

can be used to generate PWM outputs, or as simple time base.

TIM3

STM32F030x4/x6/x8/xC devices feature one synchronizable 4-channel general-purpose

timer. TIM3 is based on a 16-bit auto-reload up/downcounter and a 16-bit prescaler. It

features four independent channels each for input capture/output compare, PWM or

one-pulse mode output. This gives up to 12 input captures/output compares/PWMs on the

largest packages.

The TIM3 general-purpose timer can work with the TIM1 advanced-control timer via the

Timer Link feature for synchronization or event chaining.

TIM3 has an independent DMA request generation.

This timer is capable of handling quadrature (incremental) encoder signals and the digital

outputs from 1 to 3 hall-effect sensors.

The counter can be frozen in debug mode.

TIM14

This timer is based on a 16-bit auto-reload upcounter and a 16-bit prescaler.

TIM14 features one single channel for input capture/output compare, PWM or one-pulse

mode output.

Its counter can be frozen in debug mode.

TIM15, TIM16 and TIM17

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

TIM15 has two independent channels, whereas TIM16 and TIM17 feature one single

channel for input capture/output compare, PWM or one-pulse mode output.

The TIM15, TIM16 and TIM17 timers can work together, and TIM15 can also operate

withTIM1 via the Timer Link feature for synchronization or event chaining.

TIM15 can be synchronized with TIM16 and TIM17.

TIM15, TIM16 and TIM17 have a complementary output with dead-time generation and

independent DMA request generation.

Their counters can be frozen in debug mode.

3.11.3

Basic timers TIM6 and TIM7

These timers can be used as a generic 16-bit time base.

3.11.4

Independent watchdog (IWDG)

The independent watchdog is based on an 8-bit prescaler and 12-bit downcounter with

user-defined refresh window. It is clocked from an independent 40 kHz internal RC and as it

operates independently from the main clock, it can operate in Stop and Standby modes. It

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