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M
MRobr
Visitor II
August 4, 2020
Solved

LSM303AGR date code?

  • August 4, 2020
  • 2 replies
  • 1446 views

Hi,

I would just like to know the date code on the LSM303AGR on our PCB Board. So far I have not found any document to interpret the date code. The markings are 636 AGR.

0693W000003C0CrQAK.jpg

Regards,

Markel

    This topic has been closed for replies.
    Best answer by Peter BENSCH

    The datecode is given as 636 and should be read as 2016 (leftmost 6), week 36.

    Good luck!

    /Peter

    2 replies

    P
    Peter BENSCHAnswer
    Technical Moderator
    August 4, 2020

    The datecode is given as 636 and should be read as 2016 (leftmost 6), week 36.

    Good luck!

    /Peter

    M
    MRobrAuthor
    Visitor II
    August 4, 2020

    Thanks, Peter.

    Just another question is there any difference with LSM303AGR made on 2016 and LMS303AGR made on 2018.

    I ask this because we have a old board with LSM303AGR made on 2018, we have no problem reading the LSM303AGR. We had a new board made recently with LSM303AGR but the PCB manufacturer mounted a LSM303AGR made on 2016, the one above with markings 636 AGR. We are not able to read the LSM303AGR with markings 636 AGR.

    Regards,

    Markel

    P
    Peter BENSCH
    Technical Moderator
    August 4, 2020

    You're welcome.

    There was no change of the chip inside the LSM303AGR from 2016 till now.

    Good luck!

    /Peter

    M
    MRobrAuthor
    Visitor II
    August 5, 2020

    Thanks for your reply, Peter.

    Anyway, I am not able to read anything with this LSM303AGR with date code 636. The circuit is based from datasheet. The details are in the post below. We write to the LSM303AGR through I2C but we do not receive a ACK or Acknowledgement. I suspect the LSM303AGR with date code 636 are defective. Maybe it is old stock.

    https://community.st.com/s/feed/0D53W00000Dih0rSAB

    Regards,

    Markel

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