3.3.4.6.2 AVR debugWIRE Pinout
For a legacy application PCB which includes an AVR with the debugWire interface, the pinout as shown in the figure below may have been used.
| MPLAB PICkit 5 Pin | Adapter Board AVR JTAG Pin | Legacy debugWIRE Pin | Name | Description |
|---|---|---|---|---|
| 1 | 7 or 8 (NC) | |||
| 2 | 4 (VDD/VTG) | 2 | VCC/TTG | Target voltage (reference voltage). |
| 3 | 2 or 10 (GND) | 6 | GND | Ground |
| 4 | 3 (TDO) | |||
| 5 | 1 (TCK) | |||
| 6 | 6 (MCLR) | 5 | RESET or debugWIRE | Use pin to Reset the device or transmit debugWIRE data. |
| 7 | 9 (TDI) | |||
| 8 | 5 (TMS) |