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CD00191174 Datasheet, PDF (84/112 Pages) STMicroelectronics – High-density access line, ARM-based 32-bit MCU
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Electrical characteristics
STM32F101xC, STM32F101xD, STM32F101xE
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 43 and
Table 48, respectively.
Unless otherwise specified, the parameters given in Table 48 are derived from tests
performed under ambient temperature and VDD supply voltage conditions summarized in
Table 10.
Table 48. I/O AC characteristics(1)
MODEx
[1:0] bit
value(1)
Symbol
Parameter
Conditions
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)
CL = 50 pF, VDD = 2 V to 3.6 V
ns
tr(IO)out
Output low to high level rise
time
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
CL= 50 pF, VDD = 2 V to 3.6 V
Output low to high level rise
time
ns
25(3)
Fmax(IO)out Maximum Frequency(2)
CL= 30 pF, VDD = 2.7 V to 3.6 V 50 MHz
CL = 50 pF, VDD = 2.7 V to 3.6 V 30 MHz
CL = 50 pF, VDD = 2 V to 2.7 V 20 MHz
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 12(3) ns
CL = 30 pF, VDD = 2.7 V to 3.6 V 5(3)
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 43.
3. Guaranteed by design, not tested in production.
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Doc ID 14610 Rev 8
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