STM32H723VG datasheet(127/227 Pages) STMICROELECTRONICS

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DS13313 Rev 2

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STM32H723xE/G

Electrical characteristics

208

Analog switch between ports Pxy_C and Pxy

PA0_C, PA1_C, PC2_C and PC3_C can be connected internally to PA0, PA1, PC2 and

PC3, respectively (refer to SYSCFG_PMCR register in RM0468 reference manual). The

switch is controlled by VDDSWITCH voltage level. It is defined through BOOSTVDDSEL bit of

SYSCFG_PMCR. If the switch is closed the switch characteristics are given in the table

below.

6.3.17

NRST pin characteristics

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

resistor, RPU (see Table 50: I/O static characteristics).

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

performed under the ambient temperature and VDD supply voltage conditions summarized

in Table 12: General operating conditions.

Table 55. Pxy_C and Pxy analog switch characteristics

Parameter

Conditions

Min

Typ

Max

Unit

Switch

impedance

Switch control boosted

315

Ω

Switch control

not boosted

VDDSWITCH > 2.7 V

315

VDDSWITCH > 2.4 V

335

VDDSWITCH > 2.0 V

390

VDDSWITCH > 1.8 V

445

VDDSWITCH > 1.62 V

550

Table 56. NRST pin characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

RPU(2)

Weak pull-up equivalent

resistor(1)

1. 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)(2)

2. Guaranteed by design.

NRST Input filtered pulse

1.71 V < VDD < 3.6 V

VNF(NRST)(2) NRST Input not filtered pulse

1.71 V < VDD < 3.6 V

350

1.62 V < VDD < 3.6 V

1000

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