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  • Additional Ethernet interface
  • Comes with web interface for easy TCP/IP configuration (built-in webserver)
  • Superset of J-Link ULTRA+ [More..]
  • Download speed up to 3 MByte/s
  • Additional LEDs for power and RESET indication
  • 2 years of email support (J-Link BASE/PLUS: 1 year)
  • Comes with integrated licenses for: Unlimited breakpoints in flash memory (Unlimited Flash Breakpoints), RDI / RDDI and J-Flash
  • Supports a broad range of microcontrollers [More..]
  • Supports direct download into RAM and flash memory
  • Multiple CPUs supported—8051, PIC32, RX, ARM7/9/11, Cortex-M/R/A, RISC-V [More..]
  • Free software updates
  • Built-in VCOM functionality [More..]

J-Link PRO

J-Link PRO is a refined version of the regular J-Link. It has an Ethernet interface in addition to the USB interface, as well as two additional LEDs which are used as hardware status indicators. It connects via Ethernet or USB to the host, running Windows, Linux or macOS.

J-Link PRO is fully compatible with J-Link and can be used "out-of-the-box". J-Link PRO uses DHCP per default. The built-in webserver makes manual configuration easy. Ethernet allows using the debug probe far away from the PC, over a hardwired or wireless network, in a development or production environment; download and debugging speed is higher and Ethernet provides electrical isolation from the PC. All features of the regular J-Link also apply to this product.

There are many aspects which make J-Link PRO very attractive to use:

Speed

Up to 3 MByte/s download speed make J-Link PRO the fastest debug probe on the market. Using TCP/IP instead of USB eliminates latencies from USB usage, resulting in higher debugging speed.

Flexibility

Due to the Ethernet interface, long distances between the development PC and the target system are possible. You can set a default gateway for J-Link PRO, so it is also possible to use it in large intranets.

Security (Galvanic isolation)

Ethernet signal lines provide galvanic isolation of J-Link PRO (and so the target system) from the network and development PC. 

SEGGER J-Link Flash Breakpoint Introduction

SEGGER J-Flash Introduction

J-Link PRO Specifications

General
Supported OS Microsoft 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 (without cables) 100mm x 53mm x 27mm
Weight (without cables) 73g
Available Interfaces
Ethernet interface 100 Mbit/s
USB interface USB 2.0 (Hi-Speed)
Target interface JTAG/SWD 20-pin
JTAG/SWD Interface, Electrical
Target interface voltage (VIF) 1.2V ... 5V
Current drawn from target voltage sense pin (VTRef) < 25µA
Target supply voltage 5V (derived from USB voltage)
Target supply current Max. 300mA
Reset type Open drain. Can be pulled low or tristated
Reset low level output voltage 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 kOhm VOL <= 20% of VIF
HIGH level output voltage (VOH) with a load of 10 kOhm VOH >= 80% of VIF
For 3.6 <= VIF <= 5V
LOW level output voltage (VOL) with a load of 10 kOhm VOL <= 20% of VIF
HIGH level output voltage (VOH) with a load of 10 kOhm VOH >= 80% of VIF
JTAG/SWD Interface, Timing
Target interface speed Max. 50 MHz
SWO sampling frequency Max. 100 MHz
Data input rise time (Trdi) Trdi <= 20ns
Data input fall time (Tfdi) 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
Analog power measurement interface
Sampling frequency 200 kHz
Resolution 50 uA

J-Link PRO Licensing

J-Link PRO 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 PRO 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.

Package Content

J-Link PRO

Ethernet cable

 .1" 20-pin ribbon cable

USB cable

USB power supply

USB power supply

USB power supply