STMicroelectronics STM32WLEx Reference Manual page 516

Comparator (COMP)
19 Comparator (COMP)
19.1 COMP introduction
The device embeds two ultra-low-power comparators (COMP1 and COMP2).
These comparators can be used for a variety of functions including the following:
•
wake up from low-power mode triggered by an analog signal
•
analog signal conditioning
•
cycle-by-cycle current control loop when combined with a PWM output from a timer
19.2 COMP main features
• Configurable plus and minus inputs used for flexible voltage:
–
–
–
•
Programmable hysteresis
•
Programmable speed / consumption
•
Redirection of outputs to an I/O or to timer inputs for triggering:
–
•
Blanking of comparator outputs
•
Window comparator
•
Interrupt generation capability with wake up from Sleep and Stop modes (through the
EXTI controller)
516/1306
Multiplexed I/O pins
DAC channel1
Internal reference voltage and three sub multiple values (1/4, 1/2, 3/4) provided by
scaler (buffered voltage divider)
break events for fast PWM shutdowns
RM0461 Rev 5
RM0461