The HC12 Welcome Kit consists of a ready-built credit card sized HC12 Controller Module with a Motorola 68HC812A4 TQFP microcontroller soldered to the PCB. The module features 1kb of on-board RAM, 4kb EEPROM, two RS232 serial interfaces and nearly 80 I/O pins. All I/O pins and peripheral signals are available via two wire wrap connectors allowing the module to easily interface to any external hardware.
You may write your own assembly language programs using your favorite ASCII editor and the AS universal assembler which is included in every kit. You will also need a way to download your code. For this purpose we supply the TwinPEEKs monitor program. This software is already resident in the internal EEPROM when you receive the kit. It occupies 2 KB of the EEPROM space (so 2 KB are left for your code). The advantage: You will not need any (more or less expensive) BDM tools to download your code!
The monitor program is also suitable to display and modify memory and to start your application program in real time. The monitor is write protected, so you will not erase it unintentionally (of course you can overwrite the monitor code and use the entire EEPROM space using an optional BDM based programmer).
