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STM32H745II Datasheet(PDF) 112 Page - STMicroelectronics

Part # STM32H745II
Description  Dual 32-bit Arm® Cortex®-M7 up to 480MHz and -M4 MCUs,up to 2MB Flash, 1MB RAM, 46 com. and analog interfaces, SMPS
PDF  252 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H745II Datasheet(HTML) 112 Page - STMicroelectronics

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Electrical characteristics
STM32H745xI/G
112/252
DS12923 Rev 1
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 15. External capacitor CEXT
1. Legend: ESR is the equivalent series resistance.
VOS1
LDO
125
400
1.62
SMPS step-down
converter
VOS2
LDO
125
300
1.62
SMPS step-down
converter
125
140
VOS3
LDO(2)
105
64
1.2(2)
LDO
125
200
1.62
SMPS step-down
converter
125
140(3)
SVOS4
LDO
105
N/A
1.62
SMPS step-down
converter
125
140(3)
SVOS5
LDO
105
N/A
1.62
SMPS step-down
converter
125
140(3)
1. VOS0 (power scale 0) is not available when the SMPS step-down converter directly supplies VCORE.
2. Only for power-up sequence when the SMPS step-down converter supplies the LDO.
3. Extended Industrial temperature range sales types (range 3).
Table 24. Supply voltage and maximum frequency configuration (continued)
Power scale
VCORE source
Max TJ (°C)
Max frequency (MHz)
Min VDD (V)
Table 25. VCAP operating conditions(1)
Symbol
Parameter
Conditions
CEXT
Capacitance of external capacitor
2.2 µF(2)
ESR
ESR of external capacitor
< 100 m
Ω
MS19044V2
ESR
R Leak
C



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