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CD00161566 Datasheet, PDF (67/105 Pages) STMicroelectronics – nullMedium-density performance line ARM-based 32-bit MCU
◁
STM32F103x8, STM32F103xB
Electrical characteristics
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 30 and
Table 37, respectively.
Unless otherwise specified, the parameters given in Table 37 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
in Table 9.
Table 37. I/O AC characteristics(1)
MODEx[1:0]
bit value(1)
Symbol
Parameter
Conditions
Min Max Unit
fmax(IO)out Maximum frequency(2) CL = 50 pF, VDD = 2 V to 3.6 V -
2 MHz
10
tf(IO)out
Output high to low
level fall time
- 125(3)
tr(IO)out
Output low to high
level rise time
CL = 50 pF, VDD = 2 V to 3.6 V
ns
- 125(3)
fmax(IO)out Maximum frequency(2) CL = 50 pF, VDD = 2 V to 3.6 V
-
10 MHz
01
tf(IO)out
Output high to low
level fall time
- 25(3)
tr(IO)out
Output low to high
level rise time
CL = 50 pF, VDD = 2 V to 3.6 V
ns
- 25(3)
CL = 30 pF, VDD = 2.7 V to 3.6 V -
Fmax(IO)out Maximum frequency(2) CL = 50 pF, VDD = 2.7 V to 3.6 V -
50
30 MHz
CL = 50 pF, VDD = 2 V to 2.7 V - 20
CL = 30 pF, VDD = 2.7 V to 3.6 V - 5(3)
11
tf(IO)out
Output high to low
level fall time
CL = 50 pF, VDD = 2.7 V to 3.6 V - 8(3)
CL = 50 pF, VDD = 2 V to 2.7 V -
CL = 30 pF, VDD = 2.7 V to 3.6 V -
12(3)
5(3)
ns
tr(IO)out
Output low to high
level rise time
CL = 50 pF, VDD = 2.7 V to 3.6 V - 8(3)
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 30.
3. Guaranteed by design, not tested in production.
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