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MSP430FR5870: ADC67 - more details

Darren Jenkins
Genius 13551 points

Part Number: MSP430FR5870

MSP430 team,

Can you help with some more details about ADC67?  We have a customer affected by this, and it would help to know:

1. Approximately what percentage of devices are affected by the errata?

2. The calibration data is listed in the errata as being "invalid" and "incorrect".  Can you say if the values are off by some percentage, or are they as good as random numbers?

Here is the errata description:

The ADC12 reference temperature sensor calibration data stored in the TLV data structure (0x1A1A - 0x1A25) can be incorrect depending on the production lot trace code. As a result the temperature measurement when using these data can be wrong. Devices with lot trace code > 88XXXXX are not affected by this issue.

Thanks,

Darren

  • 0
    TI__Mastermind 30610 points

    Hey Darren,

    I was able to get a more background here.  ADC67 was an issue with the test program taking the calibration measurements,  every unit is effected.    This test program has since been fixed and why there is a published lot number and all units beyond it are correctly calibrated.

    Unfortunately, Looks like a floating pin ended up being the main root cause which means the there is not a usable pattern to the severity of the issue on each unit. Based on some of the notes, the calibration data could be very far off.  

    Thanks,

    JD

  • 0 in reply to JD Crutchfield
    TI__Genius 13551 points

    Thank you JD.  I appreciate all the details.

    Darren

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