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5.
Now choose a start location for our OTP programming and the number of bytes to program.
(a) The start location should be formatted as below and has no default contents. You must enter a
value before programming the OTP.
(b) The number of bytes is defaulted to the value “512” and should be entered as a decimal value in
the text box, if it needs to be changed.
6. Now that the start location, number of bytes, and the OTP contents are in place, we are ready to
program the OTP. Upon completion, the following dialog box should appear:
7. The first byte of the OTP (Address 0x0000) contains the I
2
C address for the device including the R/W
bit. The R/W bit of the I
2
C address must be programmed to a ‘1’ for the OTP contents to be
used. If a ‘0’ is programmed at this bit, the OTP will program but the contents will not load into
the digital core.
28
TCA8424 Evaluation Module
SCDU004 – March 2013
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