MPC5553_07 datasheet(13/66 Pages) FREESCALE

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Electrical Characteristics

MPC5553 Microcontroller Data Sheet, Rev. 2.0

Freescale Semiconductor

3.7.3

Power-Down Sequence (VRC33 Grounded)

The only requirement for the power-down sequence when VRC33 is grounded is that if VDD decreases to

less than its operating range, VDDSYN or the RESET power must decrease to less than 2.0 V before the

VDD power is allowed to increase to its operating range. This ensures that the digital 1.5 V logic, which is

reset by the ORed POR only and can cause the 1.5 V supply to decrease below its specification, is reset

properly.

3.8

DC Electrical Specifications

Table 9. DC Electrical Specifications

Spec

Characteristic

Symbol

Min

Max

Unit

Core supply voltage (average DC RMS voltage)

VDD

1.35

1.65

I/O supply voltage (fast I/O)

VDDE

1.62

3.6

I/O supply voltage (slow / medium I/O)

VDDEH

3.0

5.25

3.3 V I/O buffer voltage

VDD33

3.0

3.6

Voltage regulator control input voltage

VRC33

3.0

3.6

Analog supply voltage1

VDDA

4.5

5.25

Flash programming voltage2

VPP

4.5

5.25

Flash read voltage

VFLASH

3.0

3.6

SRAM standby voltage3

VSTBY

0.8

1.2

Clock synthesizer operating voltage

VDDSYN

3.0

3.6

Fast I/O input high voltage

VIH_F

0.65

× V

DDE

VDDE + 0.3

Fast I/O input low voltage

VIL_F

VSS – 0.3

0.35

× V

DDE

Medium / slow I/O input high voltage

VIH_S

0.65

× V

DDEH

VDDEH + 0.3

Medium / slow I/O input low voltage

VIL_S

VSS – 0.3

0.35

× V

DDEH

Fast I/O input hysteresis

VHYS_F

0.1

× V

DDE

Medium / slow I/O input hysteresis

VHYS_S

0.1

× V

DDEH

Analog input voltage

VINDC

VSSA – 0.3

VDDA + 0.3

Fast I/O output high voltage ( IOH_F = –2.0 mA )

VOH_F

0.8

× V

DDE

—V

Slow / medium I/O output high voltage ( IOH_S = –2.0 mA )

VOH_S

0.8

× V

DDEH

—V

Fast I/O output low voltage ( IOL_F = 2.0 mA )

VOL_F

—0.2

× V

DDE

Slow / medium I/O output low voltage ( IOL_S = 2.0 mA )

VOL_S

—0.2

× V

DDEH

Load capacitance (fast I/O)4

DSC (SIU_PCR[8:9] ) = 0b00

DSC (SIU_PCR[8:9] ) = 0b01

DSC (SIU_PCR[8:9] ) = 0b10

DSC (SIU_PCR[8:9] ) = 0b11

—

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