STM32F103T4U6A 查看數據表（PDF） - STMicroelectronics

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STM32F103T4U6A

Medium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 com. interfaces

STMicroelectronics 

STM32F103xC, STM32F103xD, STM32F103xE

Electrical characteristics

Low-speed external user clock generated from an external source

The characteristics given in Table 22 result from tests performed using an low-speed

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

summarized in Table 10.

Table 22. Low-speed external user clock characteristics

Symbol

Parameter

Conditions

Min

Typ

Max Unit

fLSE_ext

User External clock source

frequency(1)

32.768 1000 kHz

VLSEH

VLSEL

OSC32_IN input pin high level

voltage

OSC32_IN input pin low level

voltage

0.7VDD

VSS

VDD

V

0.3VDD

tw(LSE)

tw(LSE)

OSC32_IN high or low time(1)

450

tr(LSE)

tf(LSE)

OSC32_IN rise or fall time(1)

Cin(LSE) OSC32_IN input capacitance(1)

5

DuCy(LSE) Duty cycle

30

IL

OSC32_IN Input leakage current VSS  VIN  VD

D

ns

50

pF

70

%

±1

µA

1. Guaranteed by design, not tested in production.

Figure 20. High-speed external clock source AC timing diagram

VHSEH

VHSEL

90%

10%

tr(HSE)

tf(HSE)

THSE

EXTER NAL

fHSE_ext

CLOCK SOURC E

OSC _IN

tW(HSE)

tW(HSE) t

IL

STM32F103xx

ai14143

Doc ID 14611 Rev 7

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