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Datasheet 19

Electrical Specifications

2.5 Voltage and Current Specifications

2.5.1 Absolute Maximum and Minimum Ratings

Table 2-2 specifies absolute maximum and minimum ratings. Within functional operation limits,

functionality and long-term reliability can be expected.

At conditions outside functional operation condition limits, but within absolute maximum and

minimum ratings, neither functionality nor long-term reliability can be expected. If a device is

returned to conditions within functional operation limits after having been subjected to conditions

outside these limits, but within the absolute maximum and minimum ratings, the device may be

functional, but with its lifetime degraded depending on exposure to conditions exceeding the

functional operation condition limits.

At conditions exceeding absolute maximum and minimum ratings, neither functionality nor long-

term reliability can be expected. Moreover, if a device is subjected to these conditions for any

length of time then, when returned to conditions within the functional operating condition limits, it

will either not function, or its reliability will be severely degraded.

Although the processor contains protective circuitry to resist damage from static electric discharge,

precautions should always be taken to avoid high static voltages or electric fields.

2.5.2 DC Voltage and Current Specifications

The processor DC specifications in this section are defined at the processor core silicon and

not at the package lands unless noted otherwise. See Chapter 4 for the signal definitions and

signal assignments. Most of the signals on the processor FSB are in the GTL+ signal group.

Table 2-2. Processor DC Absolute Maximum Ratings

Symbol Parameter Min Max Unit Notes

1, 2

NOTES:

1. For functional operation, all processor electrical, signal quality, mechanical and thermal specifications must be satisfied.

2. Excessive overshoot or undershoot on any signal will likely result in permanent damage to the processor.

Core voltage with respect to V

- 0.3 1.55 V -

FSB termination voltage with

respect to V

- 0.3 1.55 V -

Processor case temperature See Section 5 See Section 5 °C -

STORAGE

Processor storage temperature –40 +85 °C

3, 4

3. Storage temperature is applicable to storage conditions only. In this scenario, the processor must not receive a clock, and

no lands can be connected to a voltage bias. Storage within these limits will not affect the long-term reliability of the device.

For functional operation, refer to the processor case temperature specifications.

4. This rating applies to the processor and does not include any tray or packaging.

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Intel Pentium D 840 Fiche technique Page 19