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JTAG/SWD debug probe with USB interface

JTAG/SWD debug probe with USB interface. Based on a 32-bit RISC CPU, it can communicate at high speed with the supported target CPUs. J-Link is used around the world in tens of thousand places for development and production (flash programming) purposes.

  • Superset of J-Link BASE
  • Download speed up to 1 MByte/s
  • Free software updates

J-Link PLUS / J-Link PLUS Compact

J-Link PLUS is a USB powered JTAG debug probe supporting a large number of CPU cores. Based on a 32-bit RISC CPU, it can communicate at high speed with the supported target CPUs. J-Link is used around the world in tens of thousand places for development and production (flash programming) purposes.

J-Link PLUS is available in two form factors with identical function: J-Link PLUS and J-Link PLUS Compact.

The J-Link debug probes are supported by all major IDEs including Eclipse, GDB-based IDEs and SEGGER Embedded Studio. For a complete list, please refer to Supported IDEs. Including all models, more than 500,000 J-Links have been shipped so far, making J-Link probably the most popular debug probe for ARM cores and the de-facto standard.

Why Use J-Link PLUS?

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J-Flash

J-Flash is a PC software to program internal and external flash memory of a microcontroller-based embedded system via J-Link or Flasher. J-Flash is running on Windows systems.

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Ozone – J-Link Debugger

Ozone is the debugger for J-Link and J-Trace. It includes all well-known debug controls and information windows and makes use of the best performance of J-Link and J-Trace debug probes.

SEGGER Flash Breakpoints Icon

Flash Breakpoints

The J-Link software comes with an additional feature, called Unlimited Flash Breakpoints. Unlimited Flash Breakpoints allow the user to set an unlimited number of breakpoints when debugging in flash memory.

Further Advantages

  • Built-in VCOM functionality
  • Comes with integrated licenses for: Unlimited breakpoints in flash memory (Unlimited Flash Breakpoints), RDI / RDDI and J-Flash
  • Supports a broad range of microcontrollers
  • Multiple CPUs supported—8051, PIC32, RX, ARM7/9/11, Cortex-M/R/A, RISC-V [More..]
  • Supports direct download into RAM and flash memory

J-Link PLUS Licensing

J-Link PLUS comes with licenses for all J-Link related SEGGER software products: J-Link Unlimited Flash Breakpoints, J-Link RDI / RDDI, J-Flash, J-Link GDB Server, providing the optimum debugging solution for professional developers.

J-Link PLUS can be used with almost all ARM debuggers, enabling download to flash memory with an unlimited number of breakpoints when debugging programs located in flash memory of most popular ARM microcontrollers. It also comes with the license to use J-Flash, SEGGER's popular flash programming software.

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SEGGER J-Link Flash Breakpoint Introduction

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SEGGER J-Flash Introduction

Specifications

SpecificationValue
Supported OSMicrosoft Windows 2000, XP, 2003, Vista, 7 and newer (32 bit and 64 bit versions)
Linux
macOS 10.5 and higher
Electromagnetic compatibility (EMC)EN 55022, EN 55024
Operating temperature+5°C ... +60°C
Storage temperature-20°C ... +65 °C
Relative humidity (non-condensing)Max. 90% rH
Mechanical
Size standard housing (without cables)100mm x 53mm x 27mm
Weight standard housing (without cables)70g
Size compact device (without cables)47mm x 40mm x 14mm
Weight compact device (without cables)20g
Available Interfaces
USB interfaceUSB 2.0 (Hi-Speed)
Target interfaceJTAG/SWD 20-pin (adapters available)
JTAG/SWD Interface, Electrical
Power supplyUSB powered Max. 50mA + Target Supply current.
Target interface voltage (VIF)1.2V ... 5V
Current drawn from target voltage sense pin (VTRef)< 25µA
Target supply voltage5V (derived from USB voltage)
Target supply currentMax. 300mA
Reset typeOpen drain. Can be pulled low or tristated
Reset low level output voltage (VOL)VOL <= 10% of VIF
For the whole target voltage range (1.2V <= VIF <= 5V)
LOW level input voltage (VIL)VIL <= 40% of VIF
HIGH level input voltage (VIH)VIH >= 60% of VIF
For 1.2V >= VIF <= 3.6V
LOW level output voltage (VOL) with a load of 10 kOhmVOL <= 20% of VIF
HIGH level output voltage (VOH) with a load of 10 kOhmVOH >= 80% of VIF
For 3.6 <= VIF <= 5V
LOW level output voltage (VOL) with a load of 10 kOhmVOL <= 20% of VIF
HIGH level output voltage (VOH) with a load of 10 kOhmVOH >= 80% of VIF
JTAG/SWD Interface, Timing
Target interface speedMax. 15 MHz
SWO sampling frequency Max. 30 MHz
Data input rise time (Trdi)Tfdi <= 20ns
Data output rise time (Trdo)Trdo <= 10ns
Data output fall time (Tfdo)Tfdo <= 10ns
Clock rise time (Trc)Trc <= 3ns
Clock fall time (Tfc)Trc <= 3ns

J-Link PLUS Compact Assembly

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The compact variant of the J-Link PLUS is designed to mount securely and unobtrusively into development or end user equipment. The small size and two mounting holes enable placing the J-Link into existing equipment housings or to reserve space for direct-to-PCB mounting.

Typical applications are test fixtures that are used to automate firmware verification during development, or long-term test setups. It also can be used for integrated firmware reflash or service purposes inside end equipment, minimizing the number of tools that service technicians must carry around.

Package Content

J-Link PLUS Debug Probe

J-Link PLUS

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.1" 20-pin ribbon cable

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USB cable

Package Content J-Link PLUS Compact

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J-Link PLUS Compact

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.1" 20-pin ribbon cable

SEGGER Cable USB Micro

Micro USB cable