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avi239955
Visitor II
February 3, 2004
Question

Read protection on STFLITE05 causes problems

  • February 3, 2004
  • 2 replies
  • 769 views
Posted on February 03, 2004 at 17:41

Read protection on STFLITE05 causes problems

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    2 replies

    A
    avi239955Author
    Visitor II
    February 3, 2004
    Posted on February 03, 2004 at 12:19

    When I re-program STFLITE05 that previously had read protection set, the internal oscillator runs slow. I need to remove and replace the part.

    S
    sjo
    Visitor II
    February 3, 2004
    Posted on February 03, 2004 at 17:41

    I'm afraid it a bit of a catch 22 as they say.

    The internal calibration values are held in Flash/eeprom depending on device.

    All is ok the first time you program the device, as soon as you clear the readout bit (after being set) the flash is erased and so are the calibration values.

    The values default to 0xFF which is why the device will run slower.

    Regards

    sjo
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