STM32F328C8 datasheet(20/109 Pages) STMICROELECTRONICS

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Functional overview

STM32F328C8

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DocID026351 Rev 3

3.13

Ultra-fast comparators (COMP)

The STM32F328C8 devices embed three ultra-fast rail-to-rail comparators (COMP2/4/6)

which offer the features below:

•

Programmable internal or external reference voltage

•

Selectable output polarity.

The reference voltage can be one of the following:

•

External I/O

•

DAC output

•

Internal reference voltage or submultiple (1/4, 1/2, 3/4). Refer to Table 20: Embedded

internal reference voltage for values and parameters of the internal reference voltage.

All comparators can wake up from STOP mode, generate interrupts and breaks for the

timers.

3.14

Timers and watchdogs

The STM32F328C8 includes advanced control timer, 5 general-purpose timers, basic timer,

two watchdog timers and a SysTick timer. The table below compares the features of the

advanced control, general purpose and basic timers.

Table 4. Timer feature comparison

Timer type

Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

Channels

Complementar

y outputs

Advanced

control

TIM1(1)

16-bit

Up, Down,

Up/Down

Any integer

between 1

and 65536

Yes

General-

purpose

TIM2

32-bit

Up, Down,

Up/Down

Any integer

between 1

and 65536

Yes

General-

purpose

TIM3

16-bit

Up, Down,

Up/Down

Any integer

between 1

and 65536

Yes

General-

purpose

TIM15

16-bit

Any integer

between 1

and 65536

Yes

General-

purpose

TIM16,

TIM17

16-bit

Any integer

between 1

and 65536

Yes

Basic

TIM6, TIM7

16-bit

Any integer

between 1

and 65536

Yes

1. TIM1 can be clocked from the PLL running at 144 MHz when the system clock source is the PLL and AHB or APB2

subsystem clocks are not divided by more than 2 cumulatively.

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