Datasheet

STM32F100xC, STM32F100xD, STM32F100xE Electrical characteristics
Doc ID 15081 Rev 7 73/98
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 27 and
Tabl e 4 5 , respectively.
Unless otherwise specified, the parameters given in Ta bl e 45 are derived from tests
performed under the ambient temperature and V
DD
supply voltage conditions summarized
in Ta bl e 9 .
Table 45. I/O AC characteristics
(1)
1. The I/O speed is configured using the MODEx[1:0] bits. Refer to the STM32F100xx reference manual for a
description of GPIO Port configuration register.
MODEx
[1:0] bit
value
(1)
Symbol Parameter Conditions 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 2
(3)
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
(3)
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
= 50 pF, V
DD
= 2 V to 3.6 V 24 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
(3)
ns