STM32L162VC Datasheet, PDF (83/123 Pages) STMicroelectronics – Ultra-low-power platform

STM32L162VC, STM32L162RC
Figure 16. I/O AC characteristics definition






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6.3.14
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, R_PU (see Table 46)
Unless otherwise specified, the parameters given in Table 46 are derived from tests
performed under the conditions summarized in Table 14.
Table 46. NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V_IL(NRST)(1)
NRST input low level
voltage
-
-
-
0.3 V_DD
V_IH(NRST)(1)
NRST input high
level voltage
-
0.39V_DD+0.59
-
V_OL(NRST)(1)
NRST output low
level voltage
I_OL = 2 mA
2.7 V < V_DD < 3.6 V
I_OL = 1.5 mA
1.65 V < V_DD < 2.7 V
-
-
-
-
-
V
0.4
V_hys(NRST)(1)
NRST Schmitt trigger
voltage hysteresis
-
-
10%V_DD(2)
-
mV
R_PU
Weak pull-up
equivalent resistor⁽³⁾
V_IN = V_SS
30
45
60
kΩ
V_F(NRST)(1)
NRST input filtered
pulse
-
-
-
50
ns
V_NF(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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