STM32F101X4 datasheet(54/73 Pages) STMICROELECTRONICS | Low-density access line, ARM-based 32-bit MCU with 16 or 32 KB Flash, 5 timers, ADC and 4 communication interfaces

Part No.	STM32F101X4

Description	Low-density access line, ARM-based 32-bit MCU with 16 or 32 KB Flash, 5 timers, ADC and 4 communication interfaces

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Electrical characteristics

STM32F101x4, STM32F101x6

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Doc ID 15058 Rev 3

5.3.14

TIM timer 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 STM32F101xx low-density access 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(1) characteristics

1.

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

Symbol

Parameter

Conditions

Min

Max

Unit

tres(TIM)

Timer resolution time

1

tTIMxCLK

fTIMxCLK = 36 MHz

27.8

ns

fEXT

Timer external clock

frequency on CH1 to CH4

0

fTIMxCLK/2

MHz

fTIMxCLK = 36 MHz

018

MHz

ResTIM

Timer resolution

16

bit

tCOUNTER

16-bit counter clock period

when internal clock is

selected

1

65536

tTIMxCLK

fTIMxCLK = 36 MHz 0.0278

1820

µs

tMAX_COUNT Maximum possible count

65536 × 65536

tTIMxCLK

fTIMxCLK = 36 MHz

119.2

s

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