SPC574S60 datasheet(36/77 Pages) STMICROELECTRONICS

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Electrical characteristics

SPC574Sx

36/77

DS10601 Rev 6

Figure 6. Power management infrastructure

3.11.2

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_HV_IO. The regulator itself is supplied by

VDD_HV_IO.

The following supplies are involved:

•

HV—High voltage external power supply for the voltage regulator module. This must be

provided externally through the VDD_HV_OSC power pin.

•

BV—High voltage external power supply for the internal ballast module. This must be

provided externally through the VDD_HV_IO power pins. Voltage values should be

aligned with VDD_HV_OSC.

•

LV—Low voltage internal power supply for the core, PLL0 and flash digital logic. This is

generated by the internal voltage regulator but provided outside to connect stability

capacitor. It is split into three further domains to ensure noise isolation between critical

LV modules within the device:

–

LV_COR—Low voltage supply for the core. It is also used to provide supply for

PLL1 through double bonding.

–

LV_FLA—Low voltage supply for the code flash module. It is supplied with

dedicated ballast and shorted to LV_COR through double bonding.

–

LV_PLL—Low voltage supply for PLL1. It is shorted to LV_COR through double

bonding.

The concept scheme of the power connections is shown below in Figure 7.

PCU

PMC_dig

PMC_ana

MC_CGM

MC_ME

SPC574S60 Datasheet(PDF) 36 Page - STMicroelectronics