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Tag-Connect, LLC

Tag-Connect TC2030-CTX-20 6-Pin ARM Cortex Debug Cable 0.05" 20-Pin

Tag-Connect TC2030-CTX-20 6-Pin ARM Cortex Debug Cable 0.05" 20-Pin

Professional 6-pin to 20-pin ARM Cortex programming cable for SWD debugging with compact footprint design

SKU: TC2030-CTX-20

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Key Features

Compact 6-Pin Target Footprint
0.05" Pitch 20-Pin Connector
IAR I-Jet Compatible Design
Reliable Pogo Pin Technology
SWD Protocol Support
Cost-Effective Production Solution
Professional Signal Integrity

Overview

Efficient ARM Cortex Debugging with Space-Saving Design

The Tag-Connect TC2030-CTX-20 is a professional 6-pin ARM Cortex programming cable designed specifically for IAR I-Jet and Keil ULINK Pro debuggers. This innovative cable features a compact 6-pin TC2030 Tag-Connector on the target side and a 20-pin ribbon connector with 0.05" (1.27mm) pitch that mates perfectly with FTSH-105 style micro-headers.

Eliminating the need for traditional board-mounted connectors, this cable can save over 66% of PCB space compared to standard 20-pin connectors whilst reducing cost on every production board. The precision-engineered pogo pin design ensures reliable electrical contact with excellent signal integrity for professional debugging applications.

Part of the Comprehensive TC2030 Series

The TC2030-CTX-20 is part of Tag-Connect's extensive CTX series, which includes the standard TC2030-CTX for 10-pin applications and the TC2030-CTX-NL no-legs variant. Each variant is specifically engineered to support different ARM Cortex debugging requirements whilst maintaining the same high-quality construction and reliable performance.

Compatible with ARM Cortex-M microcontrollers supporting SWD (Serial Wire Debug) protocol, this cable provides essential debugging signals including VCC, SWDIO, SWCLK, nRESET, GND, and SWO. Engineers choose this solution for its proven reliability, space efficiency, and compatibility with industry-standard ARM development tools.

Downloads

Superior Space Efficiency

Engineers choose this cable because it eliminates bulky board connectors whilst maintaining full ARM Cortex debugging capability.

Professional Debugger Compatibility

Essential for teams using IAR I-Jet or Keil ULINK Pro debuggers requiring reliable SWD programming connections.

Production-Ready Cost Savings

Reduces per-board costs by eliminating expensive connectors whilst providing professional debugging access during development.

Pinout, footprint and wiring diagram: TC2030-CTX-20 pinout.

This Cortex programming cable is the same as the TC2030-CTX cable except it has a 0.05″ (1.27mm) pitch 20-pin connector compatible with i-Jet and ULINK pro.

note: This won't fit the traditional 20-pin 0.1″ connector such as found on the standard J-Link debuggers).

Which cable fits your debugger? See our Tag-Connect cable guide.

Engineer Q&A

Questions and Answers

10 questions
  • Is the TC2030-CTX-20 Suitable for Trace Debugging?

    Only for SWO (Serial Wire Output) trace, which is all the standard TC2030-CTX-20 supports. For full ETM trace, use the TC2030-CTX-ETM, which provides additional trace signal connections.

    Answered by John LeggUpdated 9 Oct 2026
  • How Does the Pogo Pin Connection Compare to Traditional Connectors?

    Tag-Connect reports that its spring pins last well over 100,000 operations in cycle testing, with the ribbon cable normally failing first. There is no mating header on the board to wear out.

    Answered by John LeggUpdated 9 Oct 2026
  • What PCB Design Considerations Are Required for the TC2030 Footprint?

    The footprint has six contact pads, three alignment pin holes and, for this legged cable, four leg latch holes, inside a keep-out area.

    Footprint featureRequirement
    Contact pads6
    Alignment pin holes3
    Leg latch holes4, legged cable only (7 holes in total)
    Keep-out areaNo tracks or vias inside it
    ClearanceNo other track within 0.02 in of a pad
    Solder pasteNone on the pads

    Footprint drawings (TC2030-IDC legged, TC2030-IDC-NL no-legs) and CAD decals are on tag-connect.com.

    Answered by John LeggUpdated 9 Oct 2026
  • Can This Cable Be Used with Other ARM Development Tools?

    Only with 0.05" pitch 20-pin debuggers. For standard ARM 20-pin 0.1" debuggers, use an ARM20-CTX adapter with TC2030-IDC cables instead.

    Answered by John LeggUpdated 9 Oct 2026
  • What Advantages Does This Offer Over More Expensive Trace Solutions?

    The TC2030-CTX-20 gives you SWD debugging with SWO output, but not full ETM trace. For many applications SWO provides enough debug information without the multi-pin ETM trace connection (our advice).

    Answered by John LeggUpdated 9 Oct 2026
  • What Debuggers Are Compatible with the TC2030-CTX-20?

    The TC2030-CTX-20 is for debuggers with a 0.05 in (1.27 mm) pitch 20-pin connector, such as the IAR I-jet and Keil ULINK Pro.

    Debugger connectorDebuggersWhat to use
    20-pin, 0.05 in pitchIAR I-jet, Keil ULINK ProTC2030-CTX-20
    20-pin, 0.1 in pitchSEGGER J-Link and othersTC2030-IDC with ARM20-CTX adapter
    Answered by John LeggUpdated 9 Oct 2026
  • How Much PCB Space Does the TC2030 Footprint Require?

    The TC2030 footprint is about the size of an 0805 SMT resistor. Tag-Connect's graphic shows a 66% space saving versus the ARM 20-pin header for the legged footprint.

    Answered by John LeggUpdated 9 Oct 2026
  • What ARM Cortex Processors Are Supported?

    Tag-Connect lists the cable for Arm Cortex MCUs. Because it is passive, it works with any Cortex-M part that brings SWD out on the pin-out below; check your part's datasheet for SWD support (our advice).

    Answered by John LeggUpdated 9 Oct 2026
  • Can I Use This Cable for Production Programming?

    It can be used for programming, but the legged TC2030-CTX-20 is Tag-Connect's development version. For production programming Tag-Connect points to the no-legs TC2030-CTX-20-NL.

    The spring pins allow rapid connection and remove the cost of a board-mounted connector.

    Answered by John LeggUpdated 9 Oct 2026
  • What Signals Are Available on the 6-pin TC2030 Connector?

    The 6-pin TC2030 connector carries SWD plus SWO, which covers SWD debugging and Serial Wire Output tracing.

    PinSignal
    1VCC
    2SWDIO/TMS
    3nRESET
    4SWCLK/TCK
    5GND
    6SWO/TDO
    Answered by John LeggUpdated 9 Oct 2026

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