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STM32H742VG bảng dữ liệu(PDF) 216 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB Flash, up to 1MB RAM, 46 com. and analog interfaces
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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
Ω
MS19044V2
ESR
R Leak
C



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