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p89lpc92 kbi

Question asked by Ronald Otsig on Apr 10, 2019

The KBI does not function in a P89LPC921F but it functions in the P89LPC925F.

In the 921 the KBPATN always has a value of "0FFH" and the KBMASK always has a value of "00".  If I write the registers and read back the value, it is unchanged.  I assume that since the KBMASK is "00", that is why an interrupt never occurs.  Is anyone else aware of this problem.