Advanced-Control Timers (Tim1&Tim8); Tim1&Tim8 Introduction; Tim1&Tim8 Main Features - ST STM32F423 Reference Manual

Advanced-control timers (TIM1&TIM8)
17 Advanced-control timers (TIM1&TIM8)
17.1 TIM1&TIM8 introduction
The advanced-control timer (TIM1&TIM8) consist of a 16-bit auto-reload counter driven by a
programmable prescaler.
It may be used for a variety of purposes, including measuring the pulse length 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 advanced-control (TIM1) and general-purpose (TIMx) timers are completely
independent, and do not share any resources. They can be synchronized together as
described in
17.2 TIM1&TIM8 main features
TIM1&TIM8 timer features include:
•
16-bit up, down, up/down auto-reload counter.
•
16-bit programmable prescaler allowing dividing (also "on the fly") the counter clock
frequency either by any factor between 1 and 65536.
• Up to 4 independent channels for:
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–
–
–
•
Complementary outputs with programmable dead-time
•
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 reset state or in a known state.
•
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
462/1324
Section 17.3.20.
Input Capture
Output Compare
PWM generation (Edge and Center-aligned Mode)
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
Break input
RM0430 Rev 8
RM0430