 2004 Microchip Technology Inc.

DS21223G-page 13

25AA640/25LC640

4.0

PACKAGING INFORMATION

4.1

Package Marking Information

Legend:

XX...X

Customer specific information*

YY

Year code (last 2 digits of calendar year)

WW

Week code (week of January 1 is week ‘01’)

NNN

Alphanumeric traceability code

Note:

In the event the full Microchip part number cannot be marked on one line, it will

be carried over to the next line thus limiting the number of available characters

for customer specific information.

*

Standard marking consists of Microchip part number, year code, week code, traceability code (facility

code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please

check with your Microchip Sales Office.

XXXXXXXX

XXXXXNNN

YYWW

8-Lead PDIP (300 mil)

Example:

8-Lead SOIC (150 mil)

Example:

XXXXXXXX

XXXXYYWW

NNN

25LC640

/P017

0410

25LC640

I/SN0410

017

8-Lead TSSOP

Example:

XXXX

YYWW

NNN

5LCX

0410

017