Datasheet

Functional overview STM32L476xx
50/270 DS10198 Rev 8
This low-power timer supports the following features:
• 16-bit up counter with 16-bit autoreload register
• 16-bit compare register
• Configurable output: pulse, PWM
• Continuous/ one shot mode
• Selectable software/hardware input trigger
• Selectable clock source
– Internal clock sources: LSE, LSI, HSI16 or APB clock
– External clock source over LPTIM input (working even with no internal clock
source running, used by pulse counter application).
• Programmable digital glitch filter
• Encoder mode (LPTIM1 only)
3.24.5 Infrared interface (IRTIM)
The STM32L476xx includes one infrared interface (IRTIM). It can be used with an infrared
LED to perform remote control functions. It uses TIM16 and TIM17 output channels to
generate output signal waveforms on IR_OUT pin.
3.24.6 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.
3.24.7 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.
3.24.8 SysTick timer
This timer is dedicated to real-time operating systems, but could 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
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