STM32L475RC datasheet(41/193 Pages) STMICROELECTRONICS

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STM32L475xx

Functional overview

•

extremes detector:

–

storage of minimum and maximum values of final conversion data

–

refreshed by software

•

DMA capability to read the final conversion data

•

interrupts: end of conversion, overrun, analog watchdog, short circuit, input serial

channel clock absence

•

“regular” or “injected” conversions:

–

“regular” conversions can be requested at any time or even in continuous mode

without having any impact on the timing of “injected” conversions

–

“injected” conversions for precise timing and with high conversion priority

3.22

Random number generator (RNG)

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

analog circuit.

3.23

Timers and watchdogs

The STM32L475xx includes two advanced control timers, up to nine general-purpose

timers, two basic timers, two low-power timers, two watchdog timers and a SysTick timer.

The table below compares the features of the advanced control, general purpose and basic

timers.

Table 10. Timer feature comparison

Timer type

Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Complementary

outputs

Advanced

control

TIM1, TIM8

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

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

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