Electrical characteristics
STM32F103xx
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in
and
respectively.
Unless otherwise specified, the parameters given in
are derived from tests
performed under ambient temperature and V
DD
supply voltage conditions summarized in
Table 31.
I/O
mode
(1)
I/O AC characteristics
(1)
Symbol
Parameter
Conditions
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
Min Max Unit
2
125
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
125
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
10
25
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
25
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V
F
max(IO)out
Maximum frequency
(2)
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V
C
L
= 50 pF, V
DD
= 2 V to 2.7 V
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V
Output high to low level fall
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V
time
(3)
C
L
= 50 pF, V
DD
= 2 V to 2.7 V
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V
t
r(IO)out
Output low to high level
rise time
(3)
Pulse width of external
signals detected by the
EXTI controller
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V
C
L
= 50 pF, V
DD
= 2 V to 2.7 V
50
30
20
5
8
12
ns
5
8
12
10
ns
MHz
MHz
MHz
ns
MHz
ns
MHz
f
max(IO)out
Maximum frequency
(2)
10
t
f(IO)out
t
r(IO)out
Output high to low level fall
time
(3)
Output low to high level
rise time
(3)
f
max(IO)out
Maximum frequency
(2)
01
t
f(IO)out
t
r(IO)out
Output high to low level fall
time
(3)
Output low to high level
rise time
(3)
11
t
f(IO)out
-
t
EXTIpw
1. Refer to the Reference user manual UM0306 for a description of GPIO Port configuration register.
2. The maximum frequency is defined in
3. Values based on design simulation and validated on silicon, not tested in production.
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