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STM32H7 Datasheet(PDF) 214 Page - STMicroelectronics

No. de pieza STM32H7
Descripción Electrónicos  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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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H7 Datasheet(HTML) 214 Page - STMicroelectronics

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Electrical characteristics (rev V)
STM32H742xI/G STM32H743xI/G
214/357
DS12110 Rev 10
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.
7.3.3
Operating conditions at power-up / power-down
Subject to general operating conditions for TA.
Table 125. Operating conditions at power-up / power-down (regulator ON)
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
Ω
MS19044V2
ESR
R Leak
C
Symbol
Parameter
Min
Max
Unit
tVDD
VDD rise time rate
0
∞
µs/V
VDD fall time rate
10
∞
tVDDA
VDDA rise time rate
0
∞
VDDA fall time rate
10
∞
tVDDUSB
VDDUSB rise time rate
0
∞
VDDUSB fall time rate
10
∞



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