Electrical characteristics
STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 25 and
Table 35, respectively.
Unless otherwise specified, the parameters given in Table 35 are derived from tests
performed under the ambient temperature and V supply voltage conditions summarized
DD
in Table 8.
(1)
Table 35. I/O AC characteristics
MODEx
[1:0] bit Symbol
Parameter
Conditions
Max Unit
value(1)
fmax(IO)out Maximum frequency(2)
CL = 50 pF, VDD = 2 V to 3.6 V
2
MHz
ns
Output high to low level fall
tf(IO)out
time
125(3)
10
01
CL = 50 pF, VDD = 2 V to 3.6 V
CL= 50 pF, VDD = 2 V to 3.6 V
CL= 50 pF, VDD = 2 V to 3.6 V
CL = 50 pF, VDD = 2 V to 3.6 V
Output low to high level rise
tr(IO)out
time
125(3)
10
fmax(IO)out Maximum frequency(2)
MHz
ns
Output high to low level fall
tf(IO)out
time
25(3)
Output low to high level rise
tr(IO)out
time
25(3)
24
Fmax(IO)out Maximum frequency(2)
MHz
CL = 30 pF, VDD = 2.7 V to 3.6 V 5(3)
CL = 50 pF, VDD = 2.7 V to 3.6 V 8(3)
Output high to low level fall
tf(IO)out
time
11
CL = 50 pF, VDD = 2 V to 2.7 V
12(3)
ns
CL = 30 pF, VDD = 2.7 V to 3.6 V 5(3)
CL = 50 pF, VDD = 2.7 V to 3.6 V 8(3)
Output low to high level rise
tr(IO)out
time
CL = 50 pF, VDD = 2 V to 2.7 V
12(3)
Pulse width of external
tEXTIpw signals detected by the
EXTI controller
-
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 25.
3. Guaranteed by design, not tested in production.
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