STM32F215RG datasheet(107/175 Pages) STMICROELECTRONICS

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STM32F21xxx

Electrical characteristics

174

6.3.18

TIM timer characteristics

The parameters given in Table 49 and Table 50 are guaranteed by design.

Refer to Section 6.3.16: I/O port characteristics for details on the input/output alternate

function characteristics (output compare, input capture, external clock, PWM output).

Table 49. 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

tres(TIM)

Timer resolution time

AHB/APB1

prescaler distinct

from 1, fTIMxCLK =

60 MHz

tTIMxCLK

16.7

AHB/APB1

prescaler = 1,

fTIMxCLK = 30 MHz

tTIMxCLK

33.3

fEXT

Timer external clock

frequency on CH1 to CH4

fTIMxCLK = 60 MHz

APB1= 30 MHz

fTIMxCLK/2

MHz

030

MHz

ResTIM

Timer resolution

16/32

bit

tCOUNTER

16-bit counter clock period

when internal clock is

selected

65536

tTIMxCLK

0.0167

1092

µs

32-bit counter clock period

when internal clock is

selected

tTIMxCLK

0.0167

71582788

µs

tMAX_COUNT Maximum possible count

65536 × 65536

tTIMxCLK

71.6

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