STM32G031F6 datasheet(25/117 Pages) STMICROELECTRONICS

25 / 117 page

DS12992 Rev 2

25/117

STM32G031x4/x6/x8

Functional overview

3.15

Voltage reference buffer (VREFBUF)

3.16

Timers and watchdogs

The device includes an advanced-control timer, five general-purpose timers, two low-power

timers, two watchdog timers and a SysTick timer. Table 7 compares features of the

advanced-control, general-purpose and basic timers.

3.16.1

Advanced-control timer (TIM1)

The advanced-control timer can be seen as a three-phase PWM unit multiplexed on 6

channels. It has complementary PWM outputs with programmable inserted dead-times. It

When enabled, an embedded buffer provides the internal reference voltage to analog

blocks (for example ADC) and to VREF+ pin for external components.

The internal voltage reference buffer supports two voltages:

•

2.048 V

•

2.5 V

An external voltage reference can be provided through the VREF+ pin when the internal

voltage reference buffer is disabled.

On some packages, the VREF+ pad of the silicon die is double-bonded with supply pad to

common VDD/VDDA pin and so the internal voltage reference buffer cannot be used.

Table 7. Timer feature comparison

Timer type

Timer

Counter

resolution

Counter

type

Maximum

operating

frequency

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Comple-

mentary

outputs

Advanced-

control

TIM1

16-bit

Up, down,

up/down

128 MHz

Integer from

1 to 216

Yes

General-

purpose

TIM2

32-bit

Up, down,

up/down

64 MHz

Integer from

1 to 216

Yes

TIM3

16-bit

Up, down,

up/down

64 MHz

Integer from

1 to 216

Yes

TIM14

16-bit

64 MHz

Integer from

1 to 216

TIM16

TIM17

16-bit

64 MHz

Integer from

1 to 216

Yes

Low-power

LPTIM1

LPTIM2

16-bit

64 MHz

2n where

n=0 to 7

N/A

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