SEGGER Microcontroller GmbH
SEGGER J-Link PLUS Classic – USB JTAG/SWD Debug Probe
SEGGER J-Link PLUS Classic – USB JTAG/SWD Debug Probe
SKU: 8.08.28
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Key Features
Overview
The SEGGER J-Link PLUS Classic (SKU 8.08.28) is a high-performance JTAG/SWD debug probe for professional embedded development. It supports a wide range of CPU families including Arm® Cortex-M/R/A, Renesas RX and Microchip PIC32, and works seamlessly with major IDEs such as Keil MDK, IAR Embedded Workbench, SEGGER Embedded Studio and Eclipse/GDB.
Why Choose J-Link PLUS
PLUS includes integrated licences for Unlimited Flash Breakpoints and J-Flash, enabling efficient debugging when code runs from flash and production-grade device programming without extra purchases. Real-Time Transfer (RTT) and SWO provide high-speed application insight without instrumenting UARTs, while VCOM can expose a virtual serial port during SWD sessions. Typical performance is up to 15 MHz target interface speed with fast RAM downloads.
Part of the J-Link Family
PLUS is available in two identical-function housings: Classic (this model) and PLUS Compact. Need Ethernet or higher-speed trace workflows? See J-Link PRO. On a tighter budget? Consider J-Link BASE Classic. You can also upgrade BASE to PLUS later.
Why Engineers Choose The SEGGER J-Link PLUS Classic – USB JTAG/SWD Debug Probe
Standardise Across Projects
Debug From Flash Reliably
Production Ready Today
Frequently Asked Questions
Have a Question?
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What’s the typical interface speed?
PLUS typically runs up to 15 MHz JTAG/SWD with fast RAM download rates, sufficient for most Cortex-M workflows.
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What is the difference between the Classic vs Compact?
Classic and Compact have identical function; choose the housing that best fits your bench or fixture space.
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Can I script production programming?
Yes. Use J-Flash and command-line tools to integrate verification and logs into automated build/test stations.
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Is a Virtual COM Port available?
Yes. VCOM can be enabled to bridge a target UART over USB during SWD sessions, reducing extra cabling.
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Can J-Link PLUS power my target?
Yes—via the 20-pin ARM header’s power pin with overload protection. Dedicated adapters are available for fixed 5 V or adjustable supplies.
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How does PLUS compare with Keil ULINKpro?
The ULINKpro adds ETM instruction trace and streaming trace for deep code coverage analysis. J-Link PLUS focuses on fast JTAG/SWD, broad IDE support and bundled licences at a lower tier.
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How does PLUS compare with J-Link PRO or ULTRA+?
The PRO/ULTRA+ add higher interface clocks and advanced options suited to trace-heavy, high-throughput environments. PLUS covers most daily debug and programming tasks.
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How does PLUS differ from BASE?
PLUS includes licences for Unlimited Flash Breakpoints and J-Flash. BASE lacks these, making PLUS better for flash-based debugging and production programming.
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What IDEs are supported?
Keil MDK, IAR Embedded Workbench, SEGGER Embedded Studio and Eclipse/GDB-based environments are supported, among others.
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Does the J-Link PLUS Classic support RISC-V?
Yes, J-Link software supports RISC-V in the J-Link family. For this model, check your device on SEGGER’s supported-devices list.