# Title: SEGGER J-Link ULTRA+ Ultra-Fast JTAG/SWD Debug Probe
## Description: -
## Product type: Debugger
## Vendor: SEGGER Microcontroller GmbH
## Tags: Debug Probe, In-System Programmer, SEGGER
## Price range: 850.0 - 850.0 GBP
## Link: https://thedebugstore.com/products/segger-j-link-ultra-plus-8-16-28
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- Title: Default Title
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## Variants
- Default Title, SKU: 8.16.28, Available: yes, Inventory: 1
## Metafields
- manufacturer: SEGGER Microcontroller GmbH
- brand: SEGGER
- warranty: 12 months
- badge: No reviews
- widget:
- title_tag: SEGGER J-Link ULTRA+ 8.16.28 – Ultra-Fast JTAG/SWD Probe | Debug Store
- description_tag: SEGGER J-Link ULTRA+ (8.16.28): 4 MB/s downloads, 50 MHz JTAG/SWD, power profiling, VCOM and pro licences. Buy now at Debug Store.
- backorder_label: If no stock is shown above, order now and we'll ship within 5 working days.
- brands: gid://shopify/Metaobject/56257708255
- breadcrumbs: ["gid://shopify/Collection/269202686141","gid://shopify/Collection/447917162719","gid://shopify/Collection/421912281311"]
- key_feature_1: 4 MB/s downloads, up to 50 MHz JTAG/SWD, power profiling and VCOM for professional Arm Cortex debugging.
- manufacturer: SEGGER Microcontroller GmbH
- warranty: 12 months
- mpn: 8.16.28
- key_feature_2: 4 MB/s Flash & RAM Downloads
- key_feature_3: Up To 50 MHz JTAG/SWD
- key_feature_4: Unlimited Flash Breakpoints Licence
- key_feature_5: Built-In Power Profiling
- key_feature_6: Virtual COM (VCOM) Interface
- key_feature_7: Broad IDE & OS Support
- key_feature_8: SWO Support (Up To 100 MHz Sampling)
- customhs_code: 847180
- key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Faster programming shortens build–flash–test loops and accelerates iteration on complex embedded projects."}]}]}
- key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"High interface clocks improve single-step, run/stop and memory access responsiveness on capable targets."}]}]}
- key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Set breakpoints beyond on-chip limits to debug flash-resident code without altering application layout."}]}]}
- key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Sample current up to 200 kSa/s with 50 µA resolution to spot energy hotspots and validate power budgets."}]}]}
- key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Routes target UART over USB for logs and CLIs without a separate USB-to-serial adapter."}]}]}
- key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Works with leading IDEs on Windows, Linux and macOS; integrates via J-Link GDB Server."}]}]}
- key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Use SWO for printf-style logging and event tracing on supported Cortex-M devices."}]}]}
- why_people_choose_3_title: Power Insight Built-In
- why_people_choose_2_title: Licences Included
- why_people_choose_1_title: Throughput That Saves Time
- why_people_choose_1: 4 MB/s downloads and up to 50 MHz SWD/JTAG minimise flash cycles and speed iterative debug.
- why_people_choose_3: Integrated current measurement surfaces energy hotspots early, aiding low-power optimisation.
- why_people_choose_2: Unlimited Flash Breakpoints, J-Flash and Ozone reduce extra tooling costs and setup friction.
- 1563362: Does J-Link ULTRA+ support my Arm Cortex-M target?***SIMP***Yes, it supports a wide range of ARM Cortex devices and more; check the official supported devices list for specifics.
- 1563363: How fast is flash programming with ULTRA+ in practice?***SIMP***The probe supports up to 4 MB/s downloads; actual speed depends on MCU, flash, and memory algorithm performance.
- 1563364: Is ETM instruction trace available on ULTRA+?***SIMP***No. For ETM streaming trace and code coverage, use the SEGGER J-Trace PRO.
- 1563365: How is ULTRA+ different from J-Link PLUS?***SIMP***The ULTRA+ is 100% compatible but adds higher speed and power measurement; both include the J-Link software ecosystem.
- 1563366: How does ULTRA+ compare to more expensive Lauterbach tools?***SIMP***Lauterbach excels at high-end ETM/PTM trace analytics; ULTRA+ focuses on fast JTAG/SWD debug with integrated power profiling.
- 1563368: What operating systems are supported?***SIMP***Windows, Linux and macOS (including Apple Silicon) are supported with the J-Link Software & Documentation Pack.
- 1563369: Does ULTRA+ include Unlimited Flash Breakpoints?***SIMP***Yes, the licence is included, enabling more than the MCU’s hardware breakpoint limit when debugging in flash.
- 1563370: Can ULTRA+ power a target board?***SIMP***Yes, via the 20-pin header’s 5 V output (up to 300 mA), useful for small targets and evaluation boards.
- 1563371: Is SWO supported for real-time logs?***SIMP***Yes. SWO is supported (with high sampling rates) for printf-style logging and event tracing on supported MCUs.
- 1563372: Which tool should I choose if I need Ethernet and remote use?***SIMP***Consider the SEGGER J-Link PRO for Ethernet, higher duty cycles and remote workflows.
- summary: The SEGGER J-Link ULTRA+ is a high-performance JTAG/SWD debug probe for Arm® Cortex-A/R/M and selected other cores. It delivers up to 4 MB/s download speed and supports target interface clocks up to 50 MHz, enabling rapid flash programming and responsive debug sessions.
Included Software & Licences
ULTRA+ comes with licences for Unlimited Flash Breakpoints, J-Flash, RDI/RDDI and the Ozone debugger, plus the J-Link GDB Server. Multi-platform host support (Windows, Linux and macOS) and broad IDE compatibility simplify integration into existing workflows.
Power & Trace-Related Capabilities
Built-in power measurement (up to 200 kSa/s, 50 µA resolution) helps profile low-power designs. SWO is supported, and a virtual COM (VCOM) interface provides convenient target UART over USB. For instruction trace via ETM, consider SEGGER J-Trace PRO.
Related Models
Within the J-Link family, engineers may also consider J-Link PLUS (same software ecosystem) or J-Link PRO (adds Ethernet and high-duty production use). Choosing ULTRA+ provides higher speed and power profiling in a compact USB probe.
Why Consider ULTRA+
ULTRA+ pairs proven J-Link reliability with faster downloads, advanced software features and integrated power profiling—ideal for professional teams needing measurable throughput gains and actionable power insights.