STM32F100RC datasheet(47/98 Pages) STMICROELECTRONICS

47 / 98 page

STM32F100xC, STM32F100xD, STM32F100xE

Electrical characteristics

Doc ID 15081 Rev 7

47/98

5.3.6

External clock source characteristics

High-speed external user clock generated from an external source

The characteristics given in Table 20 result from tests performed using an high-speed

external clock source, and under the ambient temperature and supply voltage conditions

summarized in Table 9.

APB2

GPIO A

0.26

GPIO B

0.26

GPIO C

0.26

GPIO D

0.26

GPIO E

0.26

GPIO F

0.24

GPIO G

0.25

ADC1(3)

1.28

SPI1

0.2

USART1

0.37

TIM1

0.63

TIM15

0.43

TIM16

0.34

TIM17

0.34

fHCLK = fAPB1 = fAPB2 = 24 MHz, default prescaler value for each peripheral.

Specific conditions for DAC: EN1 bit in DAC_CR register set to 1.

Specific conditions for ADC: fHCLK = 24 MHz, fAPB1 = fAPB2 = fHCLK, fADCCLK = fAPB2/2, ADON bit in the

ADC_CR2 register is set to 1.

Table 19.

Peripheral current consumption (continued)

Peripheral

Typical consumption at 25 °C(1)

Unit

Table 20.

High-speed external user clock characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSE_ext

User external clock source

frequency(1)

MHz

VHSEH

OSC_IN input pin high level

voltage(1)

0.7VDD

VDD

VHSEL

OSC_IN input pin low level

voltage(1)

VSS

0.3VDD

tw(HSE)

OSC_IN high or low time(1)

tr(HSE)

tf(HSE)

OSC_IN rise or fall time(1)

Cin(HSE)

OSC_IN input capacitance(1)

5pF

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