STM32F100V8 데이터 시트보기 (PDF) - STMicroelectronics

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STM32F100V8

Low & medium-density value line, advanced ARM®-based 32-bit MCU with 16 to 128 KB Flash, 12 timers, ADC, DAC & 8 comm interfaces

STMicroelectronics 

STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB

Electrical characteristics

Low-speed external user clock generated from an external source

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

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

summarized in Table 8.

Table 20. Low-speed external user clock characteristics

Symbol

Parameter

Conditions

Min Typ Max

fLSE_ext

User external clock source

frequency(1)

VLSEH

OSC32_IN input pin high level

voltage(1)

VLSEL

OSC32_IN input pin low level

voltage(1)

tw(LSEH)

tw(LSEL)

OSC32_IN high or low time(1)

tr(LSE)

tf(LSE)

OSC32_IN rise or fall time(1)

Cin(LSE) OSC32_IN input capacitance(1)

DuCy(LSE) Duty cycle(1)

IL

OSC32_IN Input leakage current

1. Guaranteed by design.

-

VSS ≤VIN ≤VDD

- 32.768 1000

0.7VDD

-

VDD

VSS

-

0.3VDD

450

-

-

-

-

50

-

5

-

30

-

70

-

-

±1

Unit

kHz

V

ns

pF

%

µA

Figure 19. Low-speed external clock source AC timing diagram

9/6(+





9/6(/

WU/6(

WZ/6(+

7/6(

WI/6(

WZ/6(/

W

06Y9

High-speed external clock generated from a crystal/ceramic resonator

The high-speed external (HSE) clock can be supplied with a 4 to 24 MHz crystal/ceramic

resonator oscillator. All the information given in this paragraph are based on

characterization results obtained with typical external components specified in Table 21. In

the application, the resonator and the load capacitors have to be placed as close as

possible to the oscillator pins in order to minimize output distortion and startup stabilization

time. Refer to the crystal resonator manufacturer for more details on the resonator

characteristics (frequency, package, accuracy).

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