# Title: SEGGER 0.1" To 50-mil 10-Pin Patch Adapter
## Description: Technical Overview The SEGGER 50-Mil 10-Pin Patch Adapter bridges the gap between traditional 20-pin JTAG interfaces and modern compact 10-pin Cortex-M connectors. This professional-grade adapter serves dual purposes: standard Cortex-M connectivity and custom pin mapping for legacy or proprietary designs. Connector Specifications Side Connector Type Pin Count Pitch Compatible With Input 20-pin IDC Socket 20 0.1" (2.54mm) Standard JTAG debuggers Output 10-pin Header 10 0.05" (1.27mm) ARM Cortex-M targets Standard Cortex-M Pinout When used with the included ribbon cable, the adapter follows ARM's standard 10-pin Cortex-M debug connector specification: Pin Signal Pin Signal 1 VTref 2 SWDIO/TMS 3 GND 4 SWCLK/TCK 5 GND 6 SWO/TDO 7 KEY (No pin) 8 NC/TDI 9 GND 10 nRESET Note: Pin 7 is keyed (no physical pin) to prevent incorrect insertion of the connector. Custom Wiring Quick-Start For non-standard pinouts, replace the ribbon cable with individual jumper wires: Disconnect the ribbon cable from the 10-pin header side Identify target pinout from your PCB documentation Connect jumper wires between 20-pin test points and 10-pin header pins Verify connections with multimeter before powering target Essential Connections: At minimum, connect VTref, GND, SWCLK, and SWDIO for SWD operation. Add nRESET for full debug control. Compatible Debug Probes This adapter works with any debug probe featuring a standard 20-pin 0.1" JTAG connector: SEGGER: J-Link BASE, PLUS, PRO, ULTRA+, WiFi, Flasher series STMicroelectronics: ST-LINK/V2, ST-LINK/V3SET P&E Micro: Multilink Universal, Cyclone ARM ARM: ULINK2, ULINKplus (with adapter) PCB Layout Considerations When designing PCBs for 10-pin debug connectors: Parameter Recommendation Notes Connector Type Samtec FTSH-105-01-L-DV Shrouded, surface mount Keep-out Zone 3mm all sides For connector and cable clearance Via Size 0.2mm drill min Standard PCB manufacturing Trace Width 0.1mm minimum For high-speed signals PCB layout example showing optimal 10-pin debug connector placement with keep-out zones Signal Integrity Guidelines For reliable high-speed debugging: Cable Length: Keep total cable length under 30cm Ground Planes: Use solid ground planes under debug traces Impedance: Match 50Ω characteristic impedance for clock signals Termination: Add series termination resistors if signal integrity issues occur Troubleshooting Common Issues Symptom Possible Cause Solution No target detection VTref not connected Verify pin 1 connection to target VCC Intermittent connection Poor jumper wire contact Check all jumper wire connections High-speed programming fails Cable too long Reduce total cable length Cannot reset target nRESET not connected Connect pin 10 to target reset Application Examples Space-Constrained IoT Devices Modern IoT devices often cannot accommodate 20-pin connectors. This adapter enables the use of compact 10-pin connectors while maintaining compatibility with existing JTAG tools. Legacy System Integration When working with older designs that use non-standard debug pinouts, the custom wiring capability allows connection without PCB modifications. Production Programming In manufacturing environments, the compact connector reduces fixture complexity while maintaining programming speed and reliability. Professional Tip: Document custom wiring configurations in your project files. Create a simple wiring diagram showing the jumper wire connections for future reference.
## Product type: Adapter
## Vendor: SEGGER Microcontroller GmbH
## Tags: Accessory, Adapter, Debugger Accessory, Debugger Adapter, Programmer Adapter, SEGGER
## Price range: 50.26 - 50.26 GBP
## Link: https://thedebugstore.com/products/segger-8-06-28-50-mil-10-pin-patch-adapter
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## Variants
- Default Title, SKU: 8.06.28, Available: yes, Inventory: 3
## Metafields
- manufacturer: SEGGER Microcontroller GmbH
- brand: SEGGER
- warranty: 12 months
- badge: No reviews
- widget:
- title_tag: SEGGER 50-Mil 10-Pin Patch Adapter (8.06.28)
- description_tag: Say goodbye to connectivity woes! Get the 50-mil 10-Pin Patch Adapter for effortless adaptation. Custom connections made easy. Order now!
- key_feature_1: Adapts standard 20-pin 0.1" JTAG connector to 10-pin 0.05" Cortex-M with custom wiring capability.
- 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/447953600735"]
- manufacturer: SEGGER Microcontroller GmbH
- warranty: 12 months
- mpn: 8.06.28
- customhs_code: 847180
- summary: The SEGGER 50-Mil 10-Pin Patch Adapter provides seamless connectivity between standard 20-pin 0.1" JTAG connectors and compact 10-pin 0.05" Cortex-M connectors. This versatile adapter serves both standard Cortex-M applications and non-standard pinout configurations, offering engineers complete flexibility in their debugging and programming workflows. Package includes adapter board, 10 jumper wires, and 0.05" 10-pin ribbon cable for immediate use.
The adapter's unique patch capability allows custom connections between the 20-pin and 10-pin sides using the included jumper wires, making it invaluable for legacy designs or proprietary pin configurations. Compatible with all SEGGER J-Link and Flasher products, it eliminates the need for multiple specialised adapters.
For complementary solutions, explore our 9-Pin Cortex-M Adapter and Programming Voltage Adapter for comprehensive debugging capabilities.
- key_feature_2: Customisable pin mapping
- key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Use included jumpers to reroute any 20-pin to 10-pin connection"}]}]}
- key_feature_3: Standard 20-pin to 10-pin conversion
- key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Adapts 0.1\" IDC to 0.05\" Cortex-M header format"}]}]}
- key_feature_4: Complete ready-to-use kit
- key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Ships with adapter board, 10 jumpers, and ribbon cable"}]}]}
- key_feature_5: Broad J-Link compatibility
- key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Works with all SEGGER J-Link and Flasher series"}]}]}
- key_feature_6: SWD and JTAG support
- key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Supports both SWD (4-wire) and full 20-wire JTAG modes"}]}]}
- key_feature_7: Compact, robust design
- key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Gold-plated contacts and rigid PCB for reliable use"}]}]}
- key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Perfect for non-standard pinouts and older hardware designs"}]}]}
- key_feature_8: Ideal for legacy and custom targets
- why_people_choose_3_title: Cost Efficiency
- why_people_choose_2_title: Legacy Support
- why_people_choose_1_title: Space Optimisation
- why_people_choose_1: Enables compact 10-pin connectors on small PCBs where 20-pin won't fit
- why_people_choose_3: Eliminates need for multiple specialised adapters with one versatile solution
- why_people_choose_2: Provides custom wiring flexibility for older designs with non-standard pinouts
- 1569517: What's the difference between this adapter and SEGGER's other Cortex-M adapters?***SIMP***This patch adapter uniquely includes jumper wires for custom pin mapping, while standard adapters like the 9-Pin and 19-Pin Cortex-M adapters have fixed pinouts. The patch adapter works with both standard Cortex-M and non-standard design
- 1569518: Can I use this adapter with non-SEGGER debug probes?***SIMP***Yes, any debug probe with a standard 20-pin 0.1" JTAG connector can work with this adapter. It's commonly used with ST-LINK, P&E Micro, and other industry-standard debuggers.
- 1569519: What's included in the package?***SIMP***The complete package includes the adapter board, 10 individual jumper wires for custom connections, and a 0.05" 10-pin ribbon cable. No additional cables or components are required.
- 1569520: How do I wire custom pinouts using the jumper wires?***SIMP***Remove the standard ribbon cable and use the individual jumper wires to connect pins according to your target's specific pinout. The adapter provides clearly marked connection points for both the 20-pin and 10-pin sides.
- 1569521: Is this compatible with SWD (Serial Wire Debug) interface?***SIMP***Yes, the adapter supports both JTAG and SWD protocols when used with compatible debug probes. SWD requires only 4 connections: VCC, GND, SWCLK, and SWDIO.
- 1569522: What's the maximum cable length I can use with this adapter?***SIMP***The included ribbon cable is optimised for signal integrity. For longer connections, keep cables under 30cm for reliable high-speed debugging to maintain signal quality.
- 1569523: Can this adapter handle 3.3V and 5V target voltages?***SIMP***The adapter is voltage-transparent and works with any target voltage supported by your debug probe. Most modern applications use 3.3V, but 1.8V and 5V targets are also supported.
- 1569524: Does this work with automotive-grade debugging applications?***SIMP***Yes, the adapter meets professional standards for automotive and industrial applications. It's commonly used in ECU programming and embedded automotive development workflows.
- 1569525: What connectors are compatible on the target side?***SIMP***The 10-pin side uses standard 0.05" (1.27mm) pitch connectors. Compatible target connectors include Samtec FTSH series and equivalent 2x5 0.05" shrouded headers.
- 1569527: How does this compare to Tag-Connect solutions for space-saving***SIMP***While Tag-Connect eliminates connectors entirely using spring pins, this adapter provides a more permanent connection solution with standard connectors that many engineers prefer for reliability.