RM0090 General-purpose timers (TIM9 to TIM14)
Doc ID 018909 Rev 4 482/1422
16 General-purpose timers (TIM9 to TIM14)
This section applies to the whole STM32F4xx family unless otherwise specified.
16.1 TIM9 to TIM14 introduction
The TIM9 to TIM14 general-purpose 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).
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 TIM9 to TIM14 timers are completely independent, and do not share any resources.
They can be synchronized together as described in Section 16.4.12.
16.2 TIM9 to TIM14 main features
16.2.1 TIM9/TIM12 main features
The features of the TIM9 to TIM14 general-purpose timers include:
● 16-bit auto-reload upcounter (in medium density devices)
● 16-bit programmable prescaler used to divide the counter clock frequency by any factor
between 1 and 65536 (can be changed “on the fly”)
● Up to 2 independent channels for:
– Input capture
– Output compare
– PWM generation (edge-aligned mode)
– One-pulse mode output
● Synchronization circuit to control the timer with external signals and to interconnect
several timers together
● Interrupt generation on the following events:
– Update: counter overflow, counter initialization (by software or internal trigger)
– Trigger event (counter start, stop, initialization or count by internal trigger)
– Input capture
– Output compare
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