STM32F100RC datasheet(78/106 Pages) STMICROELECTRONICS

78 / 106 page

Electrical characteristics

STM32F100xC, STM32F100xD, STM32F100xE

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DocID15081 Rev 10

5.3.16

TIMx characteristics

The parameters given in Table 47 are guaranteed by design.

Refer to Section 5.3.13: I/O current injection characteristics for details on the input/output

alternate function characteristics (output compare, input capture, external clock, PWM

output).

5.3.17

Communications interfaces

I2C interface characteristics

Unless otherwise specified, the parameters given in Table 48 are preliminary values derived

from tests performed under the ambient temperature, fPCLK1 frequency and VDD supply

voltage conditions summarized in Table 9.

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 48. Refer also to Section 5.3.13: I/O current

injection characteristics for more details on the input/output alternate function characteristics

(SDA and SCL).

Table 47. TIMx characteristics

Symbol

Parameter

Conditions(1)

1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM3, TIM4, TIM5, TIM15, TIM16 and TIM17

timers.

Min

Max

Unit

tres(TIM)

Timer resolution time

-1

tTIMxCLK

fTIMxCLK = 24 MHz 41.7

fEXT

Timer external clock

frequency on CHx(2)

2. CHx is used as a general term to refer to CH1 to CH4 for TIM1, TIM2, TIM3, TIM4 and TIM5, 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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