3.3.5.6.2 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.

Figure 3-14. Legacy debugWIRE (SPI) Header Pinout
Table 3-10. debugWIRE Pin Mapping
MPLAB PICkit Basic PinAdapter Board AVR JTAG PinLegacy debugWIRE PinNameDescription
17 or 8 (NC)
24 (VDD/VTG)2VCC/TTGTarget voltage (reference voltage).
32 or 10 (GND)6GNDGround
43 (TDO)
51 (TCK)
66 (RESET/TAUX)5RESET or debugWIREUse pin to Reset the device or transmit debugWIRE data.
79 (TDI)
85 (TMS)