STM32F405xx, STM32F407xx
Electrical characteristics
(1)
Table 51. Characteristics of TIMx connected to the APB1 domain
Symbol
Parameter
Conditions
Min
Max
Unit
AHB/APB1
1
-
tTIMxCLK
prescaler distinct
from 1, fTIMxCLK
84 MHz
=
11.9
-
ns
tres(TIM)
Timer resolution time
AHB/APB1
prescaler = 1,
fTIMxCLK = 42 MHz
1
-
-
tTIMxCLK
ns
23.8
0
0
-
fTIMxCLK/2
42
MHz
MHz
Timer external clock
frequency on CH1 to CH4
fEXT
ResTIM
Timer resolution
16/32
65536
bit
16-bit counter clock
period when internal clock
is selected
1
tTIMxCLK
f
TIMxCLK = 84 MHz
0.0119
1
780
µs
tTIMxCLK
µs
APB1= 42 MHz
tCOUNTER
32-bit counter clock
period when internal clock
is selected
-
0.0119
51130563
-
-
65536 × 65536 tTIMxCLK
51.1
tMAX_COUNT Maximum possible count
s
1. TIMx is used as a general term to refer to the TIM2, TIM3, TIM4, TIM5, TIM6, TIM7, and TIM12 timers.
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