MPLAB® PICkit™ 4 In-Circuit Debugger (ICD) 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.

Table 1: Pinouts for Debug Interfaces

MPLAB® PICkit™ 4 ICD DEBUG
Pin # ICSP™ MIPS EJTAG CORTEX® SWD AVR® JTAG AVR ISP UPDI PDI aW dW TPI
1 VPP/NMCLR
2 VDD VIO_REF VTG VTG VTG VTG VTG VTG VTG VTG
3 GND GND GND GND GND GND GND GND GND GND
4 PGD TDO SWo TDO MISO UPDI PDI_DAT DATA TPI_DAT
5 PGC TCK SWCLK TCK SCK TPI_CLK
6 AUX NRESET NRST NRESET NRESET PDI_CLK dW RST
7 TDI TDI TDI MOSI
8 TMS TMS SWDIO TMS
Module BB BB BB SPI UART USART UART BB

Table 2: Pinouts for Data Stream Interfaces

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