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STM32F103xF, STM32F103xG Electrical characteristics
132
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 44 and
Table 51, respectively.
Unless otherwise specified, the parameters given in Table 51 are derived from tests
performed under ambient temperature and V
DD
supply voltage conditions summarized in
Table 10.
Table 51. I/O AC characteristics
(1)
1. The I/O speed is configured using the MODEx[1:0] bits. Refer to the STM32F10xxx reference manual for a
description of GPIO Port configuration register.
MODEx[1:0]
bit value
(1)
Symbol Parameter Conditions Min Max Unit
10
f
max(IO)out
Maximum frequency
(2)
2. The maximum frequency is defined in Figure 44.
C
L
= 50 pF, V
DD
= 2 V to 3.6 V - 2 MHz
t
f(IO)out
Output high to low
level fall time
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
-125
(3)
3. Guaranteed by design, not tested in production.
ns
t
r(IO)out
Output low to high
level rise time
-125
(3)
01
f
max(IO)out
Maximum frequency
(2)
C
L
= 50 pF, V
DD
= 2 V to 3.6 V - 10 MHz
t
f(IO)out
Output high to low
level fall time
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
-25
(3)
ns
t
r(IO)out
Output low to high
level rise time
-25
(3)
11
F
max(IO)out
Maximum frequency
(2)
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V - 50 MHz
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V - 30 MHz
C
L
= 50 pF, V
DD
= 2 V to 2.7 V - 20 MHz
t
f(IO)out
Output high to low
level fall time
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V - 5
(3)
ns
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V - 8
(3)
C
L
= 50 pF, V
DD
= 2 V to 2.7 V - 12
(3)
t
r(IO)out
Output low to high
level rise time
C
L
= 30 pF, V
DD
= 2.7 V to 3.6 V - 5
(3)
C
L
= 50 pF, V
DD
= 2.7 V to 3.6 V - 8
(3)
C
L
= 50 pF, V
DD
= 2 V to 2.7 V - 12
(3)
-t
EXTIpw
Pulse width of external
signals detected by
the EXTI controller
-10-ns
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