QG80331M667 datasheet(60/67 Pages) INTEL

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Specification Update

Intel® 80331 I/O Processor

Specification Clarifications

33.

Case Temperature Clarification

Issue:

Internal models indicate that certain elevated case temperatures (Tcase) of the 80331 may cause

elevated field failures in later years of operation. This clarification is precautionary, as Intel has not

seen any failures of the 80331 products in the field. Internal modeling data indicates that the degree

of failure risk decreases with lower operating frequency (i.e. – 500, 667, or 800MHz) and

temperature (i.e. – case temperature). If a failure should occur, it would manifest itself as a hard

failure of the I/O processor which can cause a system failure.

A detailed analysis of the system operating conditions, specifically case temperature of the 80331

I/O processor, is required. The 80331 should be run with Tcase temperatures that, over the lifetime

of the part, average less than the 95oC maximum Tcase that is currently specified in the Intel®

80331 I/O Processor Datasheet (273943).

Tcase recommendations for the 80331:

Note: Tcase temperatures in the table reflect an average Tcase temperature over the lifetime of the

product.

Status:

Fixed. This issue was fixed in the D-1 stepping of the product. See the Table , “Summary Table of

Changes” on page 9.

Frequency

5 year operating life

6 year operating life

7 year operating life

500MHz

95o C93o C91o C

667MHz

85o C83o C81o C

800MHz

79o C76o C74o C

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