Electrical characteristics
STM32F103xx
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Figure 11.
High-speed external clock source AC timing diagram
Figure 12.
Low-speed external clock source AC timing diagram
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
ai14144b
OSC32_IN
EXTER NAL
STM32F103xx
CLOCK SOURC E
VLSEH
tf(LSE)
tW(LSE)
IL
90%
10%
TLSE
t
tr(LSE)
tW(LSE)
fLSE_ext
VLSEL