SPC5604BF2MLL6 datasheet(51/109 Pages) FREESCALE

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Package pinouts and signal descriptions

MPC5604B/C Microcontroller Data Sheet, Rev. 11

Freescale Semiconductor

•

HV—High voltage external power supply for voltage regulator module. This must be provided externally through

VDD_HV power pin.

•

BV—High voltage external power supply for internal ballast module. This must be provided externally through

VDD_BV power pin. Voltage values should be aligned with VDD.

•

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

voltage regulator but provided outside to connect stability capacitor. It is further split into four main 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 FMPLL through double bonding.

— LV_CFLA—Low voltage supply for code flash module. It is supplied with dedicated ballast and shorted to

LV_COR through double bonding.

— LV_DFLA—Low voltage supply for data flash module. It is supplied with dedicated ballast and shorted to

LV_COR through double bonding.

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

Figure 10. Voltage regulator capacitance connection

The internal voltage regulator requires external capacitance (CREGn) to be connected to the device in order to provide a stable

low voltage digital supply to the device. Capacitances should be placed on the board as near as possible to the associated pins.

Care should also be taken to limit the serial inductance of the board to less than 5 nH.

Each decoupling capacitor must be placed between each of the three VDD_LV/VSS_LV supply pairs to ensure stable voltage (see

Section 3.13, Recommended operating conditions).

The internal voltage regulator requires a controlled slew rate of both VDD_HV and VDD_BV as described in Figure 11.

DEVICE

VSS_LV

VDD_BV

VDD_LV

VSS_LV

VDD_LV

VDD_HV

VSS_LV

VDD_LV

CREG2 (LV_COR/LV_CFLA)

CREG3

CDEC2

DEVICE

VDD_BV

VDD_LVn

VREF

VDD_HV

Voltage Regulator

VSS_HV

VSS_LVn

(supply/IO decoupling)

(LV_COR/LV_PLL)

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