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RM0008
13
13.1
13.2
Advanced-control timers (TIM1&TIM8)
Advanced-control timers (TIM1&TIM8)
Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx
microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx
microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
High-density devices are STM32F101xx and STM32F103xx microcontrollers where the
Flash memory density ranges between 256 and 512 Kbytes.
Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
Low- and medium-density STM32F103xx devices, and the STM32F105xx/STM32F107xx
connectivity line devices, contain one advanced-control timer (TIM1) whereas high-density
STM32F103xx devices feature two advance-control timers (TIM1 and TIM8).
TIM1&TIM8 introduction
The advanced-control timers (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 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) and general-purpose (TIMx) timers are completely
independent, and do not share any resources. They can be synchronized together as
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 65535.
Up to 4 independent channels for:
–
–
–
–
Input Capture
Output Compare
PWM generation (Edge and Center-aligned Mode)
One-pulse mode output
●
●
●
●
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.
Doc ID 13902 Rev 9
253/995
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