SEGGER Microcontroller GmbH
SEGGER J-Link BASE Classic USB JTAG/SWD Debug Probe
SEGGER J-Link BASE Classic USB JTAG/SWD Debug Probe
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Key Features
Overview
The SEGGER J-Link BASE Classic (order no. 8.08.00) is a USB-powered JTAG/SWD debug probe delivering download speeds up to 1 MB/s with a maximum target interface speed of 15 MHz and SWO sampling up to 30 MHz. It supports a very broad range of microcontrollers, including Arm® Cortex-M/R/A, legacy Arm7/9/11 and RISC-V targets. J-Link software is multi-platform (Windows, macOS, Linux) and works with all major IDEs.
All J-Links include built-in VCOM (virtual COM port) and SEGGER’s Real Time Transfer (RTT) for high-speed debug I/O without impacting real-time behaviour. Firmware and software updates are provided free of charge.
Form Factors & Upgrade Path
J-Link BASE is available as Classic (this page) and BASE Compact with identical functionality. If you later need features such as Unlimited Flash Breakpoints, J-Flash, or Ozone, add the BASE→PLUS Upgrade or consider J-Link PLUS Classic or J-Link PRO.
Why Consider J-Link BASE?
It balances capability and cost: rapid downloads, wide device/IDE coverage, RTT/VCOM utilities, and a clear upgrade path. Engineers standardise on J-Link to cover multiple vendors and toolchains while keeping workflows consistent across projects.
Why Engineers Choose The SEGGER J-Link BASE Classic USB JTAG/SWD Debug Probe
Standardise Across Projects
Efficient Debug I/O
Future-Proof Path
| General Information | |
|---|---|
Part Number (SKU) |
8.08.00
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Manufacturer |
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| Physical and Mechanical | |
Weight |
0.5 kg
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| Other | |
Warranty |
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Country of Origin |
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HS Code Customs Tariff code
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EAN |
5055383614783
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Frequently Asked Questions
Have a Question?
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Can I replace my old Macraigor Wiggler or Demon with J-Link BASE Classic for debugging?
Yes. The SEGGER J-Link BASE Classic is a modern, USB-powered JTAG/SWD probe that fully replaces legacy parallel-port devices like the Macraigor Wiggler or Demon. It offers faster downloads, broader device support and compatibility with current IDEs on Windows, macOS and Linux.
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What if I later need production flash programming?
Add the BASE→PLUS licence to gain J-Flash (and other tools) or choose a higher model.
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Is Ethernet or a web interface available on BASE?
No. BASE is USB-only. Network/web interfaces are features of higher-end J-Link models like PRO.
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Does it work on macOS and Linux as well as Windows?
Yes. J-Link software is multi-platform with installers for Windows, macOS and Linux.
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Can the BASE Classic power the target?
Yes. It can provide 5 V target supply (derived from USB) up to 300 mA; verify your board power requirements.
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How does it compare with more expensive debug probes?
Higher-end probes (e.g., ULINKplus, IAR I-jet) add features like power measurement, isolation, or streaming trace. BASE focuses on core debug at lower cost.
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Can I use J-Link BASE with open-source tools (GDB/OpenOCD)
Yes. J-Link integrates with GDB-based IDEs and is commonly used with OpenOCD-based toolchains.
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Is RTT available on J-Link BASE?
Yes. RTT is available on all J-Links and provides high-speed, low-intrusion logging via the debug connection
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Does J-Link BASE include Unlimited Flash Breakpoints, J-Flash or Ozone?
Not with BASE. These are included with higher models or enabled by purchasing the J-Link BASE→PLUS upgrade licence.
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How fast is programming and what are the signal limits?
Up to 1 MB/s download to RAM with a maximum 15 MHz target interface and SWO sampling up to 30 MHz, subject to target/IDE limits.
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What MCUs does the SEGGER J-Link BASE Classic support?
It supports a very wide range of Arm cores (Cortex-M/R/A and legacy ARM7/9/11) and RISC-V devices listed in SEGGER’s supported-devices database.