Datasheet

Electrical characteristics STM32F405xx, STM32F407xx
120/202 DocID022152 Rev 8
5.3.18 TIM timer characteristics
The parameters given in Table 52 and Table 53 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 52. Characteristics of TIMx connected to the APB1 domain
(1)
1. TIMx is used as a general term to refer to the TIM2, TIM3, TIM4, TIM5, TIM6, TIM7, and TIM12 timers.
Symbol Parameter Conditions Min Max Unit
t
res(TIM)
Timer resolution time
AHB/APB1
prescaler distinct
from 1, f
TIMxCLK
=
84 MHz
1-t
TIMxCLK
11.9 - ns
AHB/APB1
prescaler = 1,
f
TIMxCLK
= 42 MHz
1-t
TIMxCLK
23.8 - ns
f
EXT
Timer external clock
frequency on CH1 to CH4
f
TIMxCLK
= 84 MHz
APB1= 42 MHz
0f
TIMxCLK
/2 MHz
042MHz
Res
TIM
Timer resolution - 16/32 bit
t
COUNTER
16-bit counter clock
period when internal clock
is selected
1 65536 t
TIMxCLK
0.0119 780 µs
32-bit counter clock
period when internal clock
is selected
1-t
TIMxCLK
0.0119 51130563 µs
t
MAX_COUNT
Maximum possible count
- 65536 × 65536 t
TIMxCLK
- 51.1 s