STM32F358XC datasheet(88/134 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F358xC

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DocID025540 Rev 4

Figure 21. Recommended NRST pin protection

1. The reset network protects the device against parasitic resets.

2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in

Table 55. Otherwise the reset will not be taken into account by the device.

6.3.15

NPOR pin characteristics

The NPOR pin input driver uses CMOS technology. It is connected to a permanent pull-up

resistor, Rpu (see Table 56) connected to VDDA supply.

Unless otherwise specified, the parameters given in Table 56 are derived from tests

performed under ambient temperature and VDDA supply voltage conditions summarized in

Table 24.

Table 56. NPOR pin characteristics

6.3.16

Timer characteristics

The parameters given in Table 57 are guaranteed by design.

Refer to Section 6.3.13: I/O port characteristics for details on the input/output alternate

function characteristics (output compare, input capture, external clock, PWM output).

Symbol(1)

1. Guaranteed by design, not tested in production.

Parameter

Conditions

Min

Typ

Max

Unit

VIL(NPOR) NPOR Input low level voltage

0.475VDDA

- 0.2

VIH(NPOR) NPOR Input high level voltage

0.5VDDA

+ 0.2

Vhys(NPOR)

NPOR Schmitt trigger voltage

hysteresis

100

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

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