General-Purpose Timers (Tim15/Tim16/Tim17); Tim15/Tim16/Tim17 Introduction; Tim15 Main Features - STMicroelectronics RM0365 Reference Manual

General-purpose timers (TIM15/TIM16/TIM17)

22 General-purpose timers (TIM15/TIM16/TIM17)
22.1

TIM15/TIM16/TIM17 introduction

The TIM15/TIM16/TIM17 timers consist of a 16-bit auto-reload counter driven by a
programmable prescaler.
They may be used for a variety of purposes, including measuring the pulse lengths of input
signals (input capture) or generating output waveforms (output compare, PWM,
complementary PWM with dead-time insertion).
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.
The TIM15/TIM16/TIM17 timers are completely independent, and do not share any
resources. They can be synchronized together as described in
synchronization
22.2

TIM15 main features

TIM15 includes the following features:
•
16-bit auto-reload upcounter
•
16-bit programmable prescaler used to divide (also "on the fly") the counter clock
frequency by any factor between 1 and 65535
• Up to 2 independent channels for:
–
–
–
–
•
Complementary outputs with programmable dead-time (for channel 1 only)
•
Synchronization circuit to control the timer with external signals and to interconnect
several timers together
•
Repetition counter to update the timer registers only after a given number of cycles of
the counter
•
Break input to put the timer's output signals in the reset state or a known state
•
Interrupt/DMA generation on the following events:
–
–
–
–
–
619/1080
(TIM15).
Input capture
Output compare
PWM generation (edge mode)
One-pulse mode output
Update: counter overflow, counter initialization (by software or internal/external
trigger)
Trigger event (counter start, stop, initialization or count by internal/external trigger)
Input capture
Output compare
Break input (interrupt request)
DocID025202 Rev 7
RM0365
Section 22.4.20: Timer