SEGGER Microcontroller GmbH
SEGGER J-Link PRO – Ultra-Fast Ethernet/USB Debug Probe
SEGGER J-Link PRO – Ultra-Fast Ethernet/USB Debug Probe
SKU: 8.12.00
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Key Features
Overview
The SEGGER J-Link PRO (SKU 8.12.00) is an ultra-fast hardware debug probe offering both Ethernet and USB host interfaces. Equipped with DHCP by default, it provides immediate network connectivity for remote or onsite development. Two status LEDs indicate power and reset conditions, enhancing diagnostic clarity. Its cross-platform design supports Windows, Linux, and macOS environments.
Performance and Features
J-Link PRO achieves download speeds of up to 4 MiB/s to RAM and supports unlimited flash breakpoints, facilitating complex code analysis. Integrated licences for RDI, RDDI, and J-Flash enable comprehensive programming and real-time data transfer. The built-in web server simplifies TCP/IP configuration, while virtual COM port (VCOM) functionality eliminates the need for external UART adapters.
Compatibility and Ecosystem
This probe is compatible with a broad spectrum of microcontrollers, including ARM Cortex, RISC-V, Microchip PIC32, and legacy ARM cores. It integrates seamlessly with major IDEs such as Eclipse, Visual Studio Code, and SEGGER Embedded Studio, ensuring consistent workflows across diverse toolchains.
Why Choose SEGGER J-Link PRO
Combining high-speed performance, network flexibility, and unlimited flash breakpoints, J-Link PRO accelerates embedded debugging and reduces time-to-market for demanding development projects.
Why Engineers Choose The SEGGER J-Link PRO – Ultra-Fast Ethernet/USB Debug Probe
Remote Deployment
Enhanced Speed
Ecosystem Support
Professional JTAG/SWD Debug Probe with Dual Interface Connectivity
The SEGGER J-Link PRO is a high-performance debug probe that combines USB and Ethernet interfaces for maximum flexibility in embedded development. With download speeds up to 4 MB/s and support for remote debugging via Ethernet, this probe is ideal for professional development environments and test farms.
Key Technical Features
- Dual Interface: USB 2.0 Hi-Speed and 100 Mbit/s Ethernet
- Target Interface: JTAG/SWD 20-pin standard connector
- Download Speed: Up to 4 MB/s via Ethernet, 3 MB/s via USB
- Target Voltage: 1.2V to 5V with automatic level detection
Wiring Quick-Start
| Pin | Signal | Description |
|---|---|---|
| 1 | VTRef | Target voltage reference (1.2V-5V) |
| 2 | NC | Not connected |
| 3 | nRST | Target reset (open drain) |
| 5 | TDI | JTAG data input |
| 7 | TMS/SWDIO | Test mode select / SWD data I/O |
| 9 | TCK/SWCLK | Test clock / SWD clock |
| 13 | TDO/SWO | JTAG data output / SWD trace output |
| 15 | nSRST | System reset (optional) |
| 19 | VCC | Target power supply (max 300mA) |
| 4,6,8,10,12,14,16,18,20 | GND | Ground connections |
Ethernet Configuration
The J-Link PRO supports DHCP by default and includes a built-in web server for easy network configuration. Access the configuration interface by connecting to the device's IP address in any web browser.
Software Integration
Compatible with all major IDEs including SEGGER Embedded Studio, Keil µVision, IAR EWARM, Eclipse-based environments, and command-line tools via GDB Server. Includes licenses for:
- Unlimited Flash Breakpoints
- SEGGER Ozone debugger
- J-Flash programming software
- Real-Time Transfer (RTT) technology
// Example RTT output setup #include "SEGGER_RTT.h" void debug_output(void) { SEGGER_RTT_WriteString(0, "Debug message via RTT\n"); }| General Information | |
|---|---|
Part Number (SKU) |
8.12.00
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Manufacturer |
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| Physical and Mechanical | |
Weight |
0.5 kg
|
| Other | |
Warranty |
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Country of Origin |
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HS Code Customs Tariff code
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EAN |
5055383614714
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Frequently Asked Questions
Have a Question?
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What software tools are included with the SEGGER J-Link PRO?
J-Link PRO includes licences for Ozone debugger, GDB server, J-Flash, RDI, and RDDI within the J-Link Software and Documentation Package.
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How can I use the SEGGER J-Link PRO in a test farm environment?
J-Link PRO’s Ethernet interface and galvanic isolation enable reliable remote management of multiple devices, making it ideal for scalable test farms.
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Does the SEGGER J-Link PRO include virtual COM port (VCOM) functionality?
Yes. The integrated VCOM feature provides a virtual serial port for target communication, eliminating the need for external UART adapters.
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How does the SEGGER J-Link PRO compare to more expensive J-Trace solutions?
While J-Trace offers advanced trace capabilities, J-Link PRO delivers ultra-fast debugging and programming speeds plus unlimited flash breakpoints at a lower cost.
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Which microcontrollers and IDEs are compatible with the SEGGER J-Link PRO?
J-Link PRO supports ARM Cortex cores, RISC-V, Microchip PIC32, and legacy ARM devices, integrating seamlessly with IDEs like Eclipse, Visual Studio Code, and SEGGER Embedded Studio.
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Can I configure the SEGGER J-Link PRO via a web interface?
Yes. J-Link PRO includes a built-in web server for TCP/IP configuration and status monitoring using a standard web browser, requiring no additional tools.
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How does the unlimited flash breakpoint feature enhance debugging with the SEGGER J-Link PRO?
J-Link PRO’s unlimited flash breakpoints allow placement of any number of breakpoints directly in flash memory, simplifying in-depth code analysis without memory constraints.
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What are the primary host interfaces supported by the SEGGER J-Link PRO?
The J-Link PRO supports both Ethernet and USB 2.0 host interfaces, enabling flexible local and remote debugging workflows.