MPC8248CVRB datasheet(8/60 Pages) FREESCALE

8 / 60 page

MPC8272 PowerQUICC II™ Family Hardware Specifications, Rev. 1.5

Freescale Semiconductor

DC Electrical Characteristics

This device contains circuitry protecting against damage due to high static voltage or electrical fields;

however, it is advised that normal precautions be taken to avoid application of any voltages higher than

maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused

inputs are tied to an appropriate logic voltage level (either GND or VCC).

Figure 2 shows the undershoot and overshoot voltage of the 60x bus memory interface of the MPC8272.

Note that in PCI mode the I/O interface is different.

Figure 2. Overshoot/Undershoot Voltage

DC Electrical Characteristics

Table 5 shows DC electrical characteristics.

Junction temperature (maximum)

105 2

°C

Ambient temperature

0–702

°C

Caution: These are the recommended and tested operating conditions. Proper operation outside of these conditions

is not guaranteed.

Note that for extended temperature parts the range is (-40)T

– 105Tj.

Table 5. DC Electrical Characteristics 1

Characteristic

Symbol

Min

Max

Unit

Input high voltage—

all inputs except TCK, TRST and PORESET 2

VIH

2.0

3.465

Input low voltage 3

VIL

GND

0.8

CLKIN input high voltage

VIHC

2.4

3.465

CLKIN input low voltage

VILC

GND

0.4

Input leakage current, VIN = VDDH

IIN

—10

µA

Hi-Z (off state) leakage current, VIN = VDDH

IOZ

—10

µA

Signal low input current, VIL = 0.8 V

—1

µA

Table 4. Recommended Operating Conditions 1 (continued)

Rating

Symbol

Value

Unit

GND

GND – 0.3 V

GND – 1.0 V

Not to exceed 10%

GVDD

of tSDRAM_CLK

GVDD + 5%

4 V

VIH

VIL

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