CD00237391 Datasheet, PDF (101/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM

STM32F20xxx
Electrical characteristics
5.3.18
TIM timer characteristics
The parameters given in Table 48 and Table 49 are guaranteed by design.
Refer to Section 5.3.16: I/O port characteristics for details on the input/output alternate
function characteristics (output compare, input capture, external clock, PWM output).
Table 48. Characteristics of TIMx connected to the APB1 domain⁽¹⁾
Symbol
Parameter
Conditions
Min
Max
Unit
t_res(TIM) Timer resolution time
AHB/APB1
prescaler distinct
from 1, f_TIMxCLK =
60 MHz
AHB/APB1
prescaler = 1,
f_TIMxCLK = 30 MHz
1
16.7
1
33.3
-
t_TIMxCLK
-
ns
-
t_TIMxCLK
-
ns
f_EXT
Timer external clock
frequency on CH1 to CH4
0
f_TIMxCLK/2
MHz
0
30
MHz
Res_TIM Timer resolution
-
16/32
bit
t_COUNTER
16-bit counter clock period
when internal clock is
selected
f_TIMxCLK = 60 MHz
APB1= 30 MHz
32-bit counter clock period
when internal clock is
selected
1
0.0167
1
0.0167
65536
1092
-
71582788
t_TIMxCLK
µs
t_TIMxCLK
µs
t_{MAX_COUNT} Maximum possible count
-
65536 × 65536 t_TIMxCLK
-
71.6
s
1. TIMx is used as a general term to refer to the TIM2, TIM3, TIM4, TIM5, TIM6, TIM7, and TIM12 timers.
Doc ID 15818 Rev 9
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