Technological Arts Inc.

Product Info

Chips supported:

68HC812A4, 68HC912B32, 68HC912BC32, 68HC912D60/A, 68HC912DA128/A, 68HC912DG128/A, 68HC912DT128/A, and all current 9S12 derivatives (supports both 5V and 3V operation). Can communicate with 9S12XD chips, but does not support Flash erase/program nor the XGATE co-processor. MicroBDM12XG is the recommended alternative for 9S12XD and 9S12XA chips.

NOTE: if you need USB connectivity, you may wish to consider UBDM12LX5-UR instead

Product Details

Here's how to use MicroBDM12LX:

Just connect the supplied ribbon cable to the target board's "BDM IN" connector. The target board could be any Adapt12-family board, or any other 'HC12 or 9S12 board that has a 6- or 10-pin BDM interface connector. Just be sure to line up the pin 1 indicator with pin 1 on the BDM connector. The host for the BDM Pod can be any type of computer running a terminal program. The BDM pod will receive its 3V or 5V operating power from the target board through the ribbon cable. A couple of suggested Windows terminal programs: TeraTermPro, MiniIDE, Hyperterminal. For details on using other terminal programs with D-Bug12, refer to the D-Bug12 Manual.

The big advantage of using a BDM pod is that it frees up all of the target board's memory for your application, while still offering you debugging capability. You can examine memory and registers, disassemble a memory range, set breakpoints, and do tracing in the target board's on-chip memory, among other things.

What's inside the box:

MicroBDM12LX is a minimal 9S12 board, running D-Bug12 v4.0. It consists of the MCU, a crystal, an RS232 interface circuit, and a few miscellaneous components, all mounted on a small board less than 2 inches square. A 10-pin ribbon cable is attached to one edge, and a 9-pin D-sub connector is on the opposite edge, and the whole assembly is housed in a small plastic box. A 9-pin serial cable is included for the PC serial port interface.

Firmware Updates:

If DBug12 ever needs to be updated, it can be done using another BDM pod. By opening the box, applying a DC voltage (5 to 9V, nominal) to the power connector on the circuit board, and moving two jumpers to make the ribbon cable function as BDM IN, the board becomes a target, and Flash can be erased and re-programmed as needed.

Resources

Documentation and Application Notes

D-Bug12 Rev. 4 Distribution Zipfile (includes manual)