TB1 and J6 Power
The TB1 and J6 connectors provide power input to the board or if J6 is used for input, TB1 maybe used to source additional circuitry. The J6 power jack accepts a standard 2.0 ~ 2.1mm center barrel plug connector (positive voltage center) to provide the +VIN supply of +7 to +20 VDC @ 300ma minimum (+9VDC nominal). TB1 provides access to the +VIN, GND (power ground), and +5V power supplies. The CMD912x power supply will provide 500ma of +5V for user application. +VIN input power should only be applied by J6 or TB1, not both or a supply conflict may occur and the CMD912x board could be damaged.
BDM PORT
The BDM port on the PM12xxx module is a 6 pin header compatible with the Motorola Background Debug Mode (BDM) Pod. This allows the connection of a background debugger for software development, programming and debugging in
BGND
1 | 2 | GND | See the HC12 Technical Reference Manual for complete |
3 | 4 | /RESET | documentation of the BDM. |
5 | 6 | +5V |
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A Background Debug Module is available from the manufacturer.
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