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SPC574K72E5 Datasheet(PDF) 71 Page - STMicroelectronics

Part # SPC574K72E5
Description  32-bit Power Architecture based MCU for automotive applications
PDF  127 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPC574K72E5 Datasheet(HTML) 71 Page - STMicroelectronics

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71/127
SPC574Kxx
Electrical characteristics
126
3.15.1
Power management integration
Use the integration scheme provided below to ensure proper device function.
Figure 19. Voltage regulator capacitance connection
The internal voltage regulator requires external capacitance (CREGn) to be connected to the
device to provide a stable low voltage digital supply to the device. Placed capacitances on
the board as near as possible to the associated pins and limit the serial inductance of the
board to less than 5 nH.
Place a decoupling capacitor between each VDD_LV supply pin and VSS ground plane to
ensure stable voltage. Place the capacitor as near as possible to the VDD_LV supply pin.
3.15.2
Main voltage regulator electrical characteristics
The device implements an internal voltage regulator to generate the low voltage core supply
VDD_LV from the high voltage ballast supply VDD_BV_PMC, internally connected to
VDD_HV_IO_MAIN supply. The regulator itself is supplied by VDD_HV_PMC. Both high voltage
supplies are common with VDD_HV_IO.
Note:
Refer to JPC5744M_IO_Signal.xls table for details regarding power connectivity.
DEVICE
VSS
VDD_HV_IO_MAIN
VDD_LV
CDECHV
VSS
VDD_LV
VDD_LV
CDECREG2
DEVICE
I
VDD_LVn
VREF
VDD_HV_PMC
Voltage
VSS
VSS
VSS
VDD_LV
(LV_COR)
CREG
(LV_COR)
VDD_HV_PMC
CDECBV
(regulator supply decoupling)
(regulator supply decoupling)
Regulator
VSS
VSS
VDD_BV_PMC
(supplied via
VDD_IO_MAIN)
Note: The pins positions correspond to the pins positions in the pins package.



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