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bhale
Visitor II
November 14, 2002
Question

Programming option bytes on ST7FLite0

  • November 14, 2002
  • 2 replies
  • 1020 views
Posted on November 14, 2002 at 04:52

Programming option bytes on ST7FLite0

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    2 replies

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    bhaleAuthor
    Visitor II
    November 13, 2002
    Posted on November 13, 2002 at 22:13

    Does anyone know how to program the option bytes on an ST7Flite0 with a custom programmer. My understanding is that after sending the RASS keys, you must set the opt bit in the FCSR register before programming the 2 bytes (as 16 byte pairs of one bit each). However what is the address of the bytes?

    Thanks,

    Brendon

    S
    simms
    Visitor II
    November 14, 2002
    Posted on November 14, 2002 at 04:52

    The option bytes are in a parallel address space which you switch to by the OPT bit. To write the option byte you write to the start address of the XFLASH program memory area. This is indicated in the Figure on page 11 of the ST7 Flash Programming Reference Manual.

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