Typ - ST STM32F103x6 Manual

STM32F103xx
5.3.6 External clock source characteristics
High-speed external user clock
The characteristics given in
external clock source, and under ambient temperature and supply voltage conditions
summarized in
Table 15.
Symbol
f
HSE_ext
V
HSEH
V
HSEL
t
w(HSE)
t
w(HSE)
t
r(HSE)
t
f(HSE)
I
L
1. Value based on design simulation and/or technology characteristics. It is not tested in production.
Low-speed external user clock
The characteristics given in
external clock source, and under ambient temperature and supply voltage conditions
summarized in
Table 16.
Symbol
f
LSE_ext
V
LSEH
V
LSEL
t
w(LSE)
t
w(LSE)
t
r(LSE)
t
f(LSE)
I
L
1. Value based on design simulation and/or technology characteristics. It is not tested in production.
Table 15
Table 7.
High-speed external (HSE) user clock characteristics
Parameter
User external clock source
(1)
frequency
OSC_IN input pin high level
voltage
OSC_IN input pin low level
voltage
OSC_IN high or low time
(1)
OSC_IN rise or fall time
OSC_IN Input leakage
current
Table 16
Table 7.
Low-speed external user clock characteristics
Parameter
User External clock source
(1)
frequency
OSC32_IN input pin high level
voltage
OSC32_IN input pin low level
voltage
OSC32_IN high or low time
OSC32_IN rise or fall time
OSC32_IN Input leakage
current
result from tests performed using an high-speed
Conditions
0.7V
(1)
≤V ≤V
V
SS IN DD
result from tests performed using an low-speed
Conditions
(1)
(1)
≤V ≤V
V
SS IN DD
Electrical characteristics
Min

Typ

Max
8 25
V
DD
V 0.3V
SS
16
±1
Min Typ Max
32.768 1000
0.7V V
DD
V 0.3V
SS
450
±1
Unit
MHz
DD
V
DD
ns
5
µA
Unit
kHz
DD
V
DD
ns
5
µA
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