P&E's PROG12Z Flash Programmer software allows you to program/reprogram both internal and external HC12 or MC9(S)12(X) flash devices in-circuit, via any of P&E's BDM interfaces(available separately). The programmer software communicates with the processor's Background Debug Mode module through a P&E Debug Interface , which connects a communication port of a PC (Serial, Ethernet, USB, and Parallel interfaces are all available) to a 6-pin BDM connector on the target system.