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STM32F100RC Datasheet(PDF) 76 Page - STMicroelectronics

Part # STM32F100RC
Description  Clock, reset and supply management
PDF  106 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F100RC Datasheet(HTML) 76 Page - STMicroelectronics

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Electrical characteristics
STM32F100xC, STM32F100xD, STM32F100xE
76/106
DocID15081 Rev 10
Figure 27. I/O AC characteristics definition
5.3.15
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see Table 43).
Unless otherwise specified, the parameters given in Table 46 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
in Table 9.
Table 46. NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)(1)
1. Guaranteed by design, not tested in production.
NRST Input low level voltage
-
–0.5
-
0.8
V
VIH(NRST)(1) NRST Input high level voltage
-
2
-
VDD+0.5
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 must be minimum
(~10% order)
.
VIN = VSS
30
40
50
k
Ω
VF(NRST)(1) NRST Input filtered pulse
-
-
-
100
ns
VNF(NRST)(1) NRST Input not filtered pulse
-
300
-
-
ns



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