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STM32L010R8 bảng dữ liệu(PDF) 71 Page - STMicroelectronics

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STM32L010R8 bảng dữ liệu(HTML) 71 Page - STMicroelectronics

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STM32L010K8 STM32L010R8
Electrical characteristics
82
Figure 21. I/O AC characteristics definition
6.3.14
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU , except when it is internally driven low (see Table 51).
Unless otherwise specified, the parameters given in Table 51 are derived from tests
performed under ambient temperature and VDD supply voltage conditions summarized in
Table 15.
11
Fmax(IO)out Maximum frequency(4)
CL = 30 pF,
VDD = 2.7 V to 3.6 V
-35
MHz
CL = 50 pF,
VDD = 1.8 V to 2.7 V
-10
tf(IO)out
tr(IO)out
Output rise and fall time
CL = 30 pF,
VDD = 2.7 V to 3.6 V
-6
ns
CL = 50 pF,
VDD = 1.8 V to 2.7 V
-17
-tEXTIpw
Pulse width of external
signals detected by the
EXTI controller
-8
-
ns
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the line reference manual for a
description of GPIO Port configuration register.
2. BOOT0/PB9 maximum input frequency is 10 KHz (1.8 V < VDD < 2.7 V) and 5 MHz (2.7 V < VDD <3.6 V).
3. Guaranteed by design. Not tested in production.
4. The maximum frequency is defined in Figure 21.
Table 50. I/O AC characteristics(1)(2) (continued)
OSPEEDRx
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min Max(3) Unit
ai14131d
10%
90%
50%
tr(IO)out
OUTPUT
EXTERNAL
ON CL
Maximum frequency is achieved if (tr + tf) ≤ (2/3)T and if the duty cycle is (45-55%)
when loaded by CL specified in the table “
I/O AC characteristics”.
10%
50%
90%
T
tf(IO)out



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