STM32G47PBY3TR datasheet(33/229 Pages) STMICROELECTRONICS

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DS12712 Rev 3

33/229

STM32G473xB STM32G473xC STM32G473xE

Functional overview

3.21

Comparators (COMP)

The STM32G473xB/xC/xE devices embed seven rail-to-rail comparators with

programmable reference voltage (internal or external), hysteresis.

The reference voltage can be one of the following:

•

External I/O

•

DAC output channels

•

Internal reference voltage or submultiple (1/4, 1/2, 3/4).

All comparators can wake up from Stop mode, generate interrupts and breaks for the timers.

3.22

Operational amplifier (OPAMP)

The STM32G473xB/xC/xE devices embed six operational amplifiers with external or internal

follower routing and PGA capability.

The operational amplifier features:

•

13 MHz bandwidth

•

Rail-to-rail input/output

•

PGA with a non-inverting gain ranging of 2, 4, 8, 16, 32 or 64 or inverting gain ranging

of -1, -3, -7, -15, -31 or -63

3.23

Random number generator (RNG)

All devices embed an RNG that delivers 32-bit random numbers generated by an integrated

analog circuit.

3.24

Timers and watchdogs

The STM32G473xB/xC/xE devices include three advanced motor control timers, up to nine

general-purpose timers, two basic timers, one low-power timer, two watchdog timers and a

SysTick timer. The table below compares the features of the advanced motor control,

general purpose and basic timers.

Table 7. Timer feature comparison

Timer type

Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Complementary

outputs

Advanced

motor

control

TIM1, TIM8,

TIM20

16-bit

Up,

down,

Up/down

Any integer

between 1 and

65536

Yes

General-

purpose

TIM2, TIM5

32-bit

Up,

down,

Up/down

Any integer

between 1 and

65536

Yes

General-

purpose

TIM3, TIM4

16-bit

Up,

down,

Up/down

Any integer

between 1 and

65536

Yes

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