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STM32F103XB Datasheet(PDF) 44 Page - STMicroelectronics

Part # STM32F103XB
Description  Performance line, ARM-based 32-bit MCU with Flash, USB, CAN, seven 16-bit timers, two ADCs and nine communication interfaces
PDF  84 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F103XB Datasheet(HTML) 44 Page - STMicroelectronics

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Electrical characteristics
STM32F103xx
44/84
Low-speed external user clock
The characteristics given in Table 20 result from tests performed using an low-speed
external clock source, and under ambient temperature and supply voltage conditions
summarized in Table 7.
Figure 18.
High-speed external clock source AC timing diagram
Table 20.
Low-speed external user clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fLSE_ext
User External clock source
frequency(1)
1.
Value based on design simulation and/or technology characteristics. It is not tested in production.
32.768
1000
kHz
VLSEH
OSC32_IN input pin high level
voltage
0.7VDD
VDD
V
VLSEL
OSC32_IN input pin low level
voltage
VSS
0.3VDD
tw(LSE)
tw(LSE)
OSC32_IN high or low time(1)
450
ns
tr(LSE)
tf(LSE)
OSC32_IN rise or fall time(1)
5
IL
OSC32_IN Input leakage
current
VSS ≤VIN ≤VDD
±1
µA
ai14143
OSC _IN
EXTER NAL
STM32F103xx
CLOCK SOURC E
VHSEH
tf(HSE)
tW(HSE)
IL
90%
10%
THSE
t
tr(HSE)
tW(HSE)
fHSE_ext
VHSEL



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