STM32H742AI datasheet(107/357 Pages) STMICROELECTRONICS

Part #	STM32H742AI

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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107 / 357 page

DS12110 Rev 10

107/357

STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev Y)

320

6.3.2

VCAP external capacitor

Stabilization for the main regulator is achieved by connecting an external capacitor CEXT to

the VCAP pin. CEXT is specified in Table 25. Two external capacitors can be connected to

VCAP pins.

Figure 17. External capacitor CEXT

1. Legend: ESR is the equivalent series resistance.

6.3.3

Operating conditions at power-up / power-down

Subject to general operating conditions for TA.

Table 26. Operating conditions at power-up / power-down (regulator ON)

Table 25. VCAP operating conditions(1)

1. When bypassing the voltage regulator, the two 2.2 µF VCAP capacitors are not required and should be

replaced by two 100 nF decoupling capacitors.

Symbol

Parameter

Conditions

CEXT

Capacitance of external capacitor

2.2 µF(2)

2. This value corresponds to CEXT typical value. A variation of +/-20% is tolerated.

ESR

ESR of external capacitor

< 100 m

MS19044V2

ESR

R Leak

Symbol

Parameter

Min

Max

Unit

tVDD

VDD rise time rate

∞

µs/V

VDD fall time rate

∞

tVDDA

VDDA rise time rate

∞

VDDA fall time rate

∞

tVDDUSB

VDDUSB rise time rate

∞

VDDUSB fall time rate

∞

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