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STM32L151VD Datasheet(PDF) 107 Page - STMicroelectronics

Part # STM32L151VD
Description  Ultra-low-power 32-bit MCU ARM® Cortex®-M3, 384KB Flash, 48KB SRAM, 12KB EEPROM, LCD, USB, ADC, DAC, memory I/F
PDF  154 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L151VD Datasheet(HTML) 107 Page - STMicroelectronics

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DocID022027 Rev 11
107/154
STM32L151xD STM32L152xD
Electrical characteristics
129
Figure 26. I/O AC characteristics definition
6.3.15
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see Table 53)
Unless otherwise specified, the parameters given in Table 53 are derived from tests
performed under the conditions summarized in Table 13.
Table 53. 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
-
0.7 VDD
--
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
30
45
60
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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