General-Purpose Timer (Tim2); Tim2 Introduction; Tim2 Main Features - ST STM32WL5 Series Reference Manual

General-purpose timer (TIM2)

26 General-purpose timer (TIM2)
26.1

TIM2 introduction

The general-purpose timer TIM2 consists of a 32-bit auto-reload counter driven by a
programmable prescaler.
The timer may be used for a variety of purposes, including measuring the pulse lengths of
input signals (input capture) or generating output waveforms (output compare and PWM).
Pulse lengths and waveform periods can be modulated from a few microseconds to several
milliseconds using the timer prescaler and the RCC clock controller prescalers.
26.2

TIM2 main features

• 32-bit up, down, up/down auto-reload counter.
•
16-bit programmable prescaler used to divide (also "on the fly") the counter clock
frequency by any factor between 1 and 65535.
•
Up to 4 independent channels for:
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•
Synchronization circuit to control the timer with external signals and to interconnect
several timers.
•
Interrupt/DMA generation on the following events:
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Supports incremental (quadrature) encoder and hall-sensor circuitry for positioning
purposes
•
Trigger input for external clock or cycle-by-cycle current management
830/1461
Input capture
Output compare
PWM generation (Edge- and Center-aligned modes)
One-pulse mode output
Update: counter overflow/underflow, counter initialization (by software or
internal/external trigger)
Trigger event (counter start, stop, initialization or count by internal/external trigger)
Input capture
Output compare
RM0453 Rev 1
RM0453