Datasheet

DocID15060 Rev 7 61/99
STM32F103x4, STM32F103x6 Electrical characteristics
98
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 27 and
Table 37, respectively.
Unless otherwise specified, the parameters given in Table 37 are derived from tests
performed under the ambient temperature and V
DD
supply voltage conditions summarized
in
Table 9.
Table 37. 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 27.
C
L
= 50 pF, V
DD
= 2 V to 3.6 V -2MHz
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 -10MHz
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)ou
t
Maximum
frequency
(2)
C
L
= 30 pF, V
DD
= 2.7 V to
3.6 V
-50MHz
C
L
= 50 pF, V
DD
= 2.7 V to
3.6
V
-30MHz
C
L
= 50 pF, V
DD
= 2 V to 2.7 V -20MHz
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