Quick Start Guide
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The Microchip name and logo, the Microchip logo, MPLAB and PICkit are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned
herein are property of their respective companies. © 2018, Microchip Technology Incorporated. All Rights Reserved. 2/18 DS50002721A
ADDITIONAL INFORMATION
Target Circuit Design Precautions
• Do not use pull-ups on PGC/PGD
:
they will disrupt the voltage levels, since these lines have
programmable pull-down resistors in the debugger.
• Do not use capacitors on PGC/PGD
:
they will prevent fast transitions on data and clock lines
during programming and debug communications.
• Do not use capacitors on MCLR
:
they will prevent fast transitions of VPP. A simple pull-up
resistor is generally sucient.
• Do not use diodes on PGC/PGD
:
they will prevent bidirectional communication between the
debugger and the target device.
• Do
not exceed recommended cable lengths: Refer to the Hardware Specication of the
MPLAB PICkit 4 online help or user's guide for cable lengths.
2
1
5
4
3
6
7
8
Target V
DD
(tVDD)
Target Application PC Board
V DD
PGC
PGD
V
SS
AVDD**
AV
SS**
XTAL*
Incorrect
VPP /MCLR
Target Application
Device
V
Pinouts for Additional Interfaces
MPLAB
®
PICkit 4 Debugging and Programming Data Stream
Pin # ICSP MIPS EJTAG Cortex
®
SWD
DMCI/DGI
U(S)ART/CDC
DGI SPI
1 Vpp/NMCLR
2 Vdd VIO_REF VTG VTG
3 GND GND GND GND
4 PGD TDO SWo MISO
5 PGC TCK SWCLK SCK
6 AUX NRESET NRST (SCK)
7 TDI TDI TX MOSI
8 TMS TMS SWDIO RX SS
Circuitry and Connector Pinouts
2
1
5
4
3
6
7
8
Target V
DD
(tVDD)
50 kΩ
Typical
Target Application PC Board
VDD
PGC
PGD
V
SS
AV
DD
AVSS
XTAL
Correct
VPP /MCLR
Typical cable
length is 6 inches
Target Application
Device
** Target device must be running with an oscillator for the debugger to function as a debugger.
*** If the device has AVdd and AVss lines, they must be connected for the debugger to operate.
Typical 6-Pin ICSP Pinout
Pin Target MPLAB
®
PICkit 4
1 MCLR/Vpp NMCLR
2 Vdd Target Vdd
3 Vss (ground) Ground
4 PGD (ICSPDAT) PGD
5 PGC (ICSPCLK) PGC
6 Do Not Connect Do Not Connect
7 Reserved for Future use
8 Reserved for Future use
Connect
Pin 1 to Pin 1