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STM32L151C6U6 датащи(PDF) 85 Page - STMicroelectronics

номер детали STM32L151C6U6
подробное описание детали  Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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STM32L151C6U6 датащи(HTML) 85 Page - STMicroelectronics

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STM32L151x6/8/B, STM32L152x6/8/B
Electrical characteristics
105
Figure 19. 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 (see Table 45).
Unless otherwise specified, the parameters given in Table 45 are derived from tests
performed under ambient temperature and VDD supply voltage conditions summarized in
Table 13.
11
Fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD = 2.7
V to 3.6 V
-50
MHz
CL = 50 pF, VDD =
1.65 V to 2.7 V
-8
tf(IO)out
tr(IO)out
Output rise and fall time
CL = 30 pF, VDD = 2.7
V to 3.6 V
-5
ns
CL = 50 pF, VDD =
1.65 V to 2.7 V
-30
-tEXTIpw
Pulse width of external
signals detected by the
EXTI controller
-8
-
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the STM32L15xxx reference manual
for a description of GPIO Port configuration register.
2. Guaranteed by design. Not tested in production.
3. The maximum frequency is defined in Figure 19.
Table 44. I/O AC characteristics(1) (continued)
OSPEEDRx
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min
Max(2) Unit
ai14131b
10%
90%
50%
tr( IO)out
External
Output
on 50pF
Maximum frequency is achieved if (tr + tf) ≤ 2/3)T and if the duty cycle is (45-55%)
10%
50%
90%
when loaded by 50 pF
T
tf(IO)out



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