hi
thanks for all that informations, but unfortunately none of them can help me. As no one understood my real question.

I have no problem anymore with pin count as I already solved it with one more microcontroller. I needed 24 keys, LCD controller, and around 22input pins and 9 output pins to control some other stuff. But that is not an issue anymore.

I wanted to know how may i secure my code from the stealers/heckers? Therefore I wanted to use upd3200 or similar uP.

Thanks any way for the help.

Rauf