ST STM32G4 Series Reference Manual page 1041

RM0440
27 Advanced-control timers (TIM1/TIM8/TIM20)
27.1 TIM1/TIM8/TIM20 introduction
The advanced-control timers (TIM1/TIM8/TIM20) 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 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 advanced-control (TIM1/TIM8/TIM20) and general-purpose (TIMx) timers are
completely independent, and do not share any resources. They can be synchronized
together as described in
27.2 TIM1/TIM8/TIM20 main features
TIM1/TIM8/TIM20 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 6 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.
•
2 break inputs to put the timer's output signals in a safe user selectable configuration.
•
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
Section 27.3.30: Timer
Input capture (but channels 5 and 6)
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
Advanced-control timers (TIM1/TIM8/TIM20)
synchronization.
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