Advanced-control timers (TIM1/TIM8/TIM20) RM0440
1086/2126 RM0440 Rev 4
28.3.2 TIM1/TIM8/TIM20 pins and internal signals
The tables in this section summarize the TIM inputs and outputs
Table 244. TIM input/output pins
Pin name Signal type Description
TIM_CH1
TIM_CH2
TIM_CH3
TIM_CH4
Input/Output
Timer multi-purpose channels.
Each channel can be used for capture,
compare or PWM.
TIM_CH1 and TIM_CH2 can also be used
as external clock (below 1/4 of the
tim_ker_ck clock), external trigger and
quadrature encoder inputs.
TIM_CH1, TIM_CH2 and TIM_CH3 can be
used to interface with digital hall effect
sensors.
TIM_CH1N
TIM_CH2N
TIM_CH3N
TIM_CH4N
Output
Timer complementary outputs, derived from
TIM_CHx outputs with the possibility to have
deadtime insertion.
TIM_ETR Input
External trigger input. This input can be
used as external trigger or as external clock
source. This input can receive a clock with a
frequency higher than the tim_ker_ck if the
tim_etr_in prescaler is used.
TIM_BKIN
TIM_BKIN2
Input / Output
Break and Break2 inputs. These inputs can
also be configured in bidirectional mode.
Table 245. TIM internal input/output signals
Internal signal name Signal type Description
tim_ti1_in[15:0]
tim_ti2_in[15:0]
tim_ti3_in[15:0]
tim_ti4_in[15:0]
Input
Internal timer inputs bus. These inputs can
be used for capture or as external clock
(below 1/4 of the tim_ker_ck clock) and for
quadrature encoder signals.
tim_etr[15:0] Input
External trigger internal input bus. These
inputs can be used as trigger, external clock
or for hardware cycle-by-cycle pulsewidth
control. These inputs can receive clock with
a frequency higher than the tim_ker_ck if the
tim_etr_in prescaler is used.
tim_itr[15:0] Input
Internal trigger input bus. These inputs can
be used for the slave mode controller or as a
input clock (below 1/4 of the tim_ker_ck
clock).
tim_trgo/tim_trgo2 Output
Internal trigger outputs. These triggers are
used by other timers and /or other
peripherals.
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