STM32F100XD datasheet(76/106 Pages) STMICROELECTRONICS

No. de pieza	STM32F100xD

Descripción Electrónicos	Clock, reset and supply management

PDF	106 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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76 / 106 page

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

VIH(NRST)(1) NRST Input high level voltage

VDD+0.5

Vhys(NRST)

NRST Schmitt trigger voltage

hysteresis

200

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

VF(NRST)(1) NRST Input filtered pulse

100

VNF(NRST)(1) NRST Input not filtered pulse

300

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