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STM32L100RC bảng dữ liệu(PDF) 77 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Ultra-low-power 32b MCU ARM®-based Cortex®-M3, 256KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC, memory I/F
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STM32L100RC bảng dữ liệu(HTML) 77 Page - STMicroelectronics

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STM32L100RC
97
Figure 14. 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 44)
Unless otherwise specified, the parameters given in Table 44 are derived from tests
performed under the conditions summarized in Table 12.
Table 44. NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)(1)
NRST input low level
voltage
--
-
0.3 VDD
V
VIH(NRST)(1)
NRST input high
level voltage
-
0.39VDD+0.59
-
-
VOL(NRST)(1)
NRST output low
level voltage
IOL = 2 mA
2.7 V < VDD < 3.6 V
--
0.4
IOL = 1.5 mA
1.65 V < VDD < 2.7 V
--
Vhys(NRST)(1)
NRST Schmitt trigger
voltage hysteresis
--
10%VDD(2)
-mV
RPU
Weak pull-up
equivalent resistor(3)
VIN = VSS
25
45
65
k
Ω
VF(NRST)(1)
NRST input filtered
pulse
--
-
50
ns
VNF(NRST)(3)
NRST input not
filtered pulse
-
350
-
-
ns
1. Guaranteed by design.
2. With a minimum of 200 mV.
3. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series
resistance is around 10%.



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