STM32F030C6 datasheet(66/93 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F030x4/x6/x8/xC

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DS9773 Rev 4

Figure 21. I/O AC characteristics definition

6.3.15

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 21: General operating conditions.

MS32132V3

10%

50%

90%

10%

50%

90%

Maximum frequency is achieved if (t + t ) ≤

when loaded by C (see the table I/O AC characteristics definition)

r(IO)out

f(IO)out

T and if the duty cycle is (45-55%)

Table 49. NRST pin characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL(NRST) NRST input low level voltage

0.3 VDD+0.07(1)

VIH(NRST) NRST input high level voltage

0.445 VDD+0.398(1)

Vhys(NRST)

NRST Schmitt trigger voltage

hysteresis

200

RPU

Weak pull-up equivalent

resistor(2)

VIN = VSS

VF(NRST) NRST input filtered pulse

100(1)

VNF(NRST) NRST input not filtered pulse

2.7 < VDD < 3.6

300(3)

2.4 < VDD < 3.6

500(3)

1. Data based on design simulation only. 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 is minimal (~10% order).

3. Data based on design simulation only. Not tested in production.

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