MPC8270ZUI Просмотр технического описания (PDF) - Freescale Semiconductor

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MPC8270ZUI

PowerQUICC II Family Hardware Specifications

Freescale Semiconductor 

Operating Conditions

2 Caution: VDD/VCCSYN must not exceed VDDH by more than 0.4 V during normal operation. It is recommended that

VDD/VCCSYN should be raised before or simultaneous with VDDH during power-on reset. VDD/VCCSYN may

exceed VDDH by more than 0.4 V during power-on reset for no more than 100 ms.

3 Caution: VDDH can exceed VDD/VCCSYN by 3.3 V during power on reset by no more than 100 mSec. VDDH should

not exceed VDD/VCCSYN by more than 2.5 V during normal operation.

4 Caution: VIN must not exceed VDDH by more than 2.5 V at any time, including during power-on reset.

This table lists recommended operational voltage conditions.

Table 4. Recommended Operating Conditions1

Core supply voltage

Rating

Symbol

VDD

Value

Unit

1.45 – 1.60

V

PLL supply voltage

VCCSYN

1.45 – 1.60

V

I/O supply voltage

VDDH

3.135 – 3.465

V

Input voltage

VIN

GND (–0.3) – 3.465 V

Junction temperature (maximum)

Tj

1052

°C

Ambient temperature

TA

0–702

°C

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

is not guaranteed.

2 Note that for extended temperature parts the range is (-40)TA– 105Tj.

This SoC 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).

This figure shows the undershoot and overshoot voltage of the 60x and local bus memory interface of the

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

4V

GVDD + 5%

VIH

GVDD

GND

VIL GND – 0.3 V

GND – 1.0 V

Not to exceed 10%

of tSDRAM_CLK

Figure 2. Overshoot/Undershoot Voltage

MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 2

8

Freescale Semiconductor

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