3.3.2 Target Connection Pinouts

The programming connector pin functions are different for various devices and interfaces. Refer to the following pinout tables for debug and data stream interfaces. Legacy 6-pin RJ-11 cable can also be used, however target interfaces which use pins 1 (TMS/SWDIO) and 8 (TDI/MOSI) can not be programmed or debugged.
Note: Refer to the data sheet for the device you are using as well as the application notes for the specific interface for additional information and diagrams.
Table 3-2. Pinouts for Debug Interfaces
MPLAB ICD 5 DEBUG TARGET4
8-Pin Modular Connector1 Pin # Pin Name ICSP™ (MCHP) MIPS EJTAG Cortex® SWD AVR® JTAG AVR debugWIRE AVR UPDI AVR PDI AVR ISP AVR TPI 8-Pin Modular Connector 6-Pin Modular Connector
8 TTDI TDI TDI MOSI 1
7 TVPP MCLR /Vpp MCLR RESET RESET3 2 1
6 TVDD VDD VDD/VDDIO VDD VTG VTG VTG VTG VTG VTG 3 2
5 GND GND GND GND GND GND GND GND GND GND 4 3
4 PGD DAT TDO SWO2 TDO DAT3 DAT MISO DAT 5 4
3 PGC CLK TCK SWCLK TCK SCK CLK 6 5
2 TAUX RESET RESET/dW CLK RESET RESET 7 6
1 TTMS TMS SWDIO2 TMS 8
  1. Black (8-pin) cable must be used for EJTAG, JTAG, SWD and ISP.
  2. SWO is used for trace. SWDIO is for debug.
  3. Pin may be used for High-Voltage Pulse reactivation of UPDI function depending on device. See device data sheet for details.
  4. These are example target connectors that are assumed similar to the debug unit (modular).
Figure 3-6. 8-Pin Modular Connector
Table 3-3. Pinouts for Data Stream Interfaces
MPLAB® ICD 5 DATA STREAM TARGET2
8-Pin Modular Connector PIC and AVR Devices SAM Devices1 8-Pin Modular Connector 6-Pin Modular Connector
Pin # DGI UART / CDC DGI UART / CDC Pin # Pin #
8 TX (target) TX (target) 1
7 2 1
6 VTG VTG 3 2
5 GND GND 4 3
4 5 4
3 6 5
2 RX (target) 7 6
1 RX (target) 8
  1. RX pin moved because of wiring for other devices.
  2. These are example target connectors that are assumed similar to the debug unit (modular).
Note: For 6-pin RJ11 into 8-pin RJ45 socket, pins 1 and 8 are lost.