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STM32F303VCT6 bảng dữ liệu(PDF) 92 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  ARM Cortex-M4 32b MCUFPU, up to 256KB Flash48KB SRAM 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V operation
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STM32F303VCT6 bảng dữ liệu(HTML) 92 Page - STMicroelectronics

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Electrical characteristics
STM32F302xx/STM32F303xx
92/132
DocID023353 Rev 6
Figure 23. 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 52).
Unless otherwise specified, the parameters given in Table 55 are derived from tests
performed under ambient temperature and VDD supply voltage conditions summarized in
Table 22.
10%
90%
50%
tr(IO)out
UT
NAL
pF
10%
50%
90%
T
tr(IO)out
Table 55. NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)(1) NRST Input low level voltage
-
-
0.3VDD+
0.07(1)
V
VIH(NRST)(1) NRST Input high level voltage
0.445VDD+
0.398(1)
--
Vhys(NRST) NRST Schmitt trigger voltage hysteresis
-
200
-
mV
RPU
Weak pull-up equivalent resistor(2)
VIN = VSS
25
40
55
k
Ω
VF(NRST)(1) NRST Input filtered pulse
-
-
100(1)
ns
VNF(NRST)(1) NRST Input not filtered pulse
500(1)
--
ns
1. Guaranteed by design, not tested in production.
2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series
resistance must be minimum
(~10% order)
.



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