questions abour Part Marking

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licall
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questions abour Part Marking

Postby licall » Sun Jan 20, 2013 10:45 pm

XMOS chip's Part Marking scheme is:

USMMYYFN QS
LLLLLL.LL

My questions:
1) what means "US", it means United States?
2) what means "MM", it is 2 digital month?
3) what means "YY", it is 2 digital year?
4) what is LLLLLL.LL, the lot code.

Thank you!
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segher
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Postby segher » Mon Jan 21, 2013 2:08 am

licall wrote:XMOS chip's Part Marking scheme is:

USMMYYFN QS
LLLLLL.LL

That's the part marking for newer L-series chips.

My questions:
1) what means "US", it means United States?

The SU-series chips have SK there. I don't find it likely that XMOS has their
chips manufactured in the USA and Slovakia. It probably does identify the
factory in some way though.

2) what means "MM", it is 2 digital month?
3) what means "YY", it is 2 digital year?

It does seem the MMYY part identifies a date, but it seems to be in YYWW
format (year and week of the year).

4) what is LLLLLL.LL, the lot code.

It's a number (well, alphanumerical actually) that identifies the batch of
chips this belongs to. The trailing LL seems to be 00 usually.
licall
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Postby licall » Mon Jan 21, 2013 2:58 am

Hi, Segher, thank you!
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Ross
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Postby Ross » Mon Jan 21, 2013 11:30 am

Just to let you know, this is described in the data sheet(s)

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