STM32F100C4 datasheet(60/84 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB

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Doc ID 16455 Rev 2

5.3.14

TIMx characteristics

The parameters given in Table 37 are guaranteed by design.

Refer to Section 5.3.12: I/O port characteristics for details on the input/output alternate

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

5.3.15

Communications interfaces

I2C interface characteristics

Unless otherwise specified, the parameters given in Table 38 are derived from tests

performed under the ambient temperature, fPCLK1 frequency and VDD supply voltage

conditions summarized in Table 8.

The STM32F100xx value line I2C interface meets the requirements of the standard I2C

communication protocol with the following restrictions: the I/O pins SDA and SCL are

mapped to are not “true” open-drain. When configured as open-drain, the PMOS connected

between the I/O pin and VDD is disabled, but is still present.

The I2C characteristics are described in Table 38. Refer also to Section 5.3.12: I/O port

characteristics for more details on the input/output alternate function characteristics (SDA

and SCL).

Table 37.

TIMx characteristics

Symbol

Parameter

Conditions(1)

TIMx is used as a general term to refer to the TIM1, TIM2, TIM3, TIM4, TIM15, TIM16 and TIM17 timers.

Min

Max

Unit

tres(TIM)

Timer resolution time

1tTIMxCLK

fTIMxCLK = 24 MHz

41.7

fEXT

Timer external clock

frequency on CHx(2)

CHx is used as a general term to refer to CH1 to CH4 for TIM1, TIM2, TIM3 and TIM4, to the CH1 to CH2

for TIM15, and to CH1 for TIM16 and TIM17.

0fTIMxCLK/2

MHz

fTIMxCLK = 24 MHz

MHz

ResTIM

Timer resolution

bit

tCOUNTER

16-bit counter clock period

when the internal clock is

selected

65536

tTIMxCLK

fTIMxCLK = 24 MHz

2730

µs

tMAX_COUNT Maximum possible count

65536 × 65536

tTIMxCLK

fTIMxCLK = 24 MHz

178

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