MPC5673F datasheet(34/132 Pages) FREESCALE

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MPC5674F Microcontroller Data Sheet, Rev. 6

Electrical Characteristics

Freescale Semiconductor

4.7.1

I/O Pad Current Specifications

The power consumption of an I/O segment is dependent on the usage of the pins on a particular segment. The power

consumption is the sum of all output pin currents for a particular segment. The output pin current can be calculated from

Table 15 based on the voltage, frequency, and load on the pin. Use linear scaling to calculate pin currents for voltage, frequency,

and load parameters that fall outside the values given in Table 15.

The AC timing of these pads are described in the Section 4.11.2, “Pad AC Specifications.”

4.7.2

I/O Pad VDD33 Current Specifications

The power consumption of the VDD33 supply is dependent on the usage of the pins on all I/O segments. The power consumption

is the sum of all input and output pin VDD33 currents for all I/O segments. The VDD33 current draw on fast speed pads can be

calculated from Table 16 dependent on the voltage, frequency, and load on all F type pins. The VDD33 current draw on medium

pads can be calculated from Table 16 dependent on voltage and independent on the frequency and load on all MH type pins.

Use linear scaling to calculate pin currents for voltage, frequency, and load parameters that fall outside the values given in

Table 16.

The AC timing of these pads are described in the Section 4.11.2, “Pad AC Specifications.”

Table 15. VDDE/VDDEH I/O Pad Average DC Current

1 These are average IDDE numbers for worst case PVT from simulation. Currents apply to output pins only.

Spec

Pad Type

Symbol

Frequency

(MHz)

Load2

(pF)

2 All loads are lumped.

Voltage

(V)

Drive/Slew

Rate Select

Current (mA)

1Medium

IDRV_MH

5.25

16.0

505.2501

6.3

3.0

5.25

1.1

2.0

200

5.25

2.4

5Fast

IDRV_FC

3.6

6.5

666

3.6

9.4

766

3.6

10.8

866

3.6

33.3

Fast w/ Slew

Control

IDRV_FSR

3.6

12.0

3.6

6.2

33.33

3.6

4.0

3.6

2.4

200

3.6

8.9

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