Electrical characteristics
STM32F103x4, STM32F103x6
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in
Figure 22
and
Table 36,
respectively.
Unless otherwise specified, the parameters given in
Table 36
are derived from tests
performed under the ambient temperature and V
DD
supply voltage conditions summarized
in
Table 9.
Table 36.
I/O AC characteristics
(1)
Parameter
Conditions
Min
Max
2
125
(3)
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
125
(3)
10
25
(3)
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
11
t
f(IO)out
Output high to low
level fall time
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
t
r(IO)out
Output low to high
level rise time
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
(3)
MODEx[1:0]
Symbol
bit value
(1)
Unit
MHz
f
max(IO)out
Maximum frequency
(2)
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
10
t
f(IO)out
t
r(IO)out
Output high to low
level fall time
Output low to high
level rise time
ns
f
max(IO)out
Maximum frequency
(2)
C
L
= 50 pF, V
DD
= 2 V to 3.6 V
01
t
f(IO)out
t
r(IO)out
Output high to low
level fall time
Output low to high
level rise time
MHz
ns
50
30
20
5
(3)
8
(3)
12
(3)
5
(3)
8
(3)
12
(3)
MHz
MHz
MHz
ns
-
t
EXTIpw
10
ns
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.
2. The maximum frequency is defined in
Figure 22
3. Guaranteed by design, not tested in production.
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