MPLAB® ICD 4 Debugger Pinouts for Interfaces

The programming connector pin functions are different for various devices and interfaces. Refer to the following pinout tables for debug and data stream interfaces.

Refer to the datasheet for the device you are using as well as the application notes for the specific interface for additional information and diagrams.

For MPLAB® ICD 4 connector information, see the "Connecting an RJ-11 Type Cable to an RJ-45 Socket" page.

Table 1: Pinouts for Debug Interfaces

MPLAB ICD 4 DEBUG
Pin # Pin Name ICSP™ (MCHP) MIPS EJTAG Cortex® SWD JTAG DW(IRE) UPDI PDI AW AVR® _ISP TPI
8 TTDI TTDI TDI MOSI
7 TVPP MCLR MCLR MCLR
6 TVDD VDD VIO_REF VTG VTG VTG VTG VTG VTG VTG VTG
5 GND GND GND GND GND GND GND GND GND GND GND
4 PGD DAT TDO SWO TDO DAT DAT DATA MISO DAT
3 PGC CLK TCK SWCLK TCK SCK CLK
2 TAUX AUX TAUX RESET SW-DAT CLK RESET RST
1 TTMS TTMS SWDIO TMS

Table 2: Pinouts for Data Stream Interfaces

MPLAB ICD 4 DATA STREAM
Pin # DMCI / DGI
U(S)ART / CDC
DGI SPI
8 TX MOSI
7
6 VTG VTG
5 GND GND
4 MISO
3 SCK
2 (SCK)
1 RX SS
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