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STM32G474PBY3XXX Datasheet(PDF) 134 Page - STMicroelectronics

No. de pieza STM32G474PBY3XXX
Descripción Electrónicos  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math acc, 184 ps 12 chan Hi-res timer
PDF  236 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32G474PBY3XXX Datasheet(HTML) 134 Page - STMicroelectronics

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Electrical characteristics
STM32G474xB STM32G474xC STM32G474xE
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DS12288 Rev 5
Figure 26. I/O AC characteristics definition(1)
1. Refer to Table 56: I/O (except FT_c) AC characteristics.
5.3.15
NRST pin characteristics
The NRST pin input driver uses the CMOS technology. It is connected to a permanent pull-
up resistor, RPU.
Unless otherwise specified, the parameters given in the table below are derived from tests
performed under the ambient temperature and supply voltage conditions summarized in
Table 17: General operating conditions.
MS32132V2
T
10%
50%
90%
10%
50%
90%
Maximum frequency is achieved if (t + t (≤ 2/3)T and if the duty cycle is (45-55%)
when loaded by the specified capacitance.
r
f
r(IO)out
t
f(IO)out
t
Table 58. NRST pin characteristics(1)
1.
Guaranteed by design.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)
NRST input low level
voltage
--
-
0.3ₓVDD
V
VIH(NRST)
NRST input high level
voltage
-0.7ₓVDD
--
Vhys(NRST)
NRST Schmitt trigger
voltage hysteresis
--
200
-
mV
RPU
Weak pull-up equivalent
resistor(2)
2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to
the series resistance is minimal (~10% order)
.
VIN = VSS
25
40
55
kΩ
VF(NRST)
NRST input filtered
pulse
--
-
70
ns
VNF(NRST)
NRST input not filtered
pulse
1.71 V ≤ VDD
≤ 3.6 V
350
-
-
ns



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