STM32L412R8I6PXXX datasheet(42/192 Pages) STMICROELECTRONICS

42 / 192 page

Functional overview

STM32L412xx

42/192

DS12469 Rev 8

3.20.5

Infrared interface (IRTIM)

The STM32L412xx includes one infrared interface (IRTIM), which can be used with an

infrared LED to perform remote control functions. It uses TIM15 and TIM16 output channels

to generate output signal waveforms on IR_OUT pin.

3.20.6

Independent watchdog (IWDG)

The independent watchdog is based on a 12-bit downcounter and 8-bit prescaler. It is

clocked from an independent 32 kHz internal RC (LSI) and as it operates independently

from the main clock, it can operate in Stop and Standby modes. It can be used either as a

watchdog to reset the device when a problem occurs, or as a free running timer for

application timeout management. It is hardware or software configurable through the option

bytes. The counter can be frozen in debug mode.

3.20.7

System window watchdog (WWDG)

The window watchdog is based on a 7-bit downcounter that can be set as free running. It

can be used as a watchdog to reset the device when a problem occurs. It is clocked from

the main clock. It has an early warning interrupt capability and the counter can be frozen in

debug mode.

3.20.8

SysTick timer

This timer is dedicated to real-time operating systems, but can also be used as a standard

down counter. It features:

•

A 24-bit down counter

•

Autoreload capability

•

Maskable system interrupt generation when the counter reaches 0

•

Programmable clock source

STM32L412R8I6PXXX 数据表(PDF) 42 Page - STMicroelectronics

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