Hi,
we have an4258 for S12(X)
http://cache.nxp.com/files/microcontrollers/doc/app_note/AN4258.pdf
here is demo code:
http://cache.nxp.com/files/microcontrollers/doc/app_note/AN4258SW.zip
9X12XE128 demo code is also included in the package.
can this help you?
Have a great day,
Jennie Zhang
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