Electrical characteristics
STM32F103xC, STM32F103xD, STM32F103xE
5.3.16
TIM timer characteristics
The parameters given in Table 50 are guaranteed by design.
Refer to Section 5.3.14: I/O port characteristics for details on the input/output alternate
function characteristics (output compare, input capture, external clock, PWM output).
(1)
Table 50. TIMx characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
tTIMxCLK
ns
1
tres(TIM)
Timer resolution time
fTIMxCLK = 72 MHz 13.9
0
fTIMxCLK/2
36
MHz
Timer external clock
frequency on CH1 to CH4
fEXT
fTIMxCLK = 72 MHz
0
MHz
ResTIM
Timer resolution
16
bit
16-bit counter clock period
when internal clock is
selected
tTIMxCLK
1
65536
tCOUNTER
fTIMxCLK = 72 MHz 0.0139
910
µs
tTIMxCLK
s
65536 × 65536
59.6
tMAX_COUNT
Maximum possible count
fTIMxCLK = 72 MHz
1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM3 and TIM4 timers.
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