1) Choose chips with flash, for example tms320f2812.
Copy Protection - High
2)HASP! to add new chip to your schematic, with on-chip flash.
Copy Protection - Low
HASP is an English word, it means a metal fastener with a hinged slotted part that fits over a staple and is secured by a pin, bolt, or padlock. Now refers to a technique to safeguard the software