STM32F217VG datasheet(25/173 Pages) STMICROELECTRONICS

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STM32F21xxx

Description

Doc ID 17050 Rev 8

25/173

2.2.20

Timers and watchdogs

The STM32F21x devices include two advanced-control timers, eight general-purpose

timers, two basic timers and two watchdog timers.

All timer counters can be frozen in debug mode.

Table 3 compares the features of the advanced-control, general-purpose and basic timers.

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

Table 3.

Timer feature comparison

Timer type Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Complementary

output

Max

interface

clock

Max

timer

clock

Advanced-

control

TIM1,

TIM8

16-bit

Up,

Down,

Up/down

Any integer

between 1

and 65536

Yes

60 MHz

120

MHz

General

purpose

TIM2,

TIM5

32-bit

Up,

Down,

Up/down

Any integer

between 1

and 65536

Yes

30 MHz

MHz

TIM3,

TIM4

16-bit

Up,

Down,

Up/down

Any integer

between 1

and 65536

Yes

30 MHz

MHz

Basic

TIM6,

TIM7

16-bit

Any integer

between 1

and 65536

Yes

30 MHz

MHz

General

purpose

TIM9

16-bit

Any integer

between 1

and 65536

60 MHz

120

MHz

TIM10,

TIM11

16-bit

Any integer

between 1

and 65536

60 MHz

120

MHz

TIM12

16-bit

Any integer

between 1

and 65536

30 MHz

MHz

TIM13,

TIM14

16-bit

Any integer

between 1

and 65536

30 MHz

MHz

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