STM32H742AI datasheet(216/357 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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Electrical characteristics (rev V)

STM32H742xI/G STM32H743xI/G

216/357

DS12110 Rev 7

7.3.2

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 124. Two external capacitors can be connected to

VCAP pins.

Figure 70. External capacitor CEXT

1. Legend: ESR is the equivalent series resistance.

Table 123. Supply voltage and maximum frequency configuration

Power scale

VCORE source

Max TJ (°C) Max frequency (MHz)

Min VDD (V)

VOS0

LDO

105

480

1.7

VOS1

LDO

125

400

1.62

VOS2

LDO

125

300

1.62

VOS3

LDO

125

200

1.62

SVOS4

LDO

105

N/A

1.62

SVOS5

LDO

105

N/A

1.62

Table 124. 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

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