Adapter board For jtag SWD Arm MCU stm32 V8 V9 ULINK STLINK

Description

Adapter board For jtag SWD Arm MCU stm32 V8 V9 ULINK STLINK

Specifications for a typical Adapter Board for JTAG / SWD ARM MCU (STM32 V8 / V9 / ULINK / ST-LINK):

📦 General Information

• Type: JTAG/SWD interface adapter board

• Purpose: Adapts debugger/programmer pinouts (such as ST-LINK, ULINK, J-LINK, CMSIS-DAP, V8, V9 programmers) to standard ARM SWD or JTAG headers

• Supported targets: ARM Cortex-M microcontrollers (STM32, NXP, Atmel/Microchip SAM, etc.)

• Supported programmers: ST-LINK V2/V3, J-LINK, ULINK2, CMSIS-DAP, STM32 V8, V9 clones

⚡ Electrical Characteristics

• Signal voltage levels:

  • Supports 1.8 V to 5.0 V target logic (depends on programmer capability)

• Interfaces:

  • SWD (Serial Wire Debug) — 2-wire interface (SWDIO, SWCLK)

  • JTAG — 4-wire interface (TDI, TDO, TCK, TMS)

  • Optional NRST (reset) line

• Power options:

  • Can pass 3.3 V or 5 V from debugger to target (jumper-selectable on some boards)

  • Or target can be self-powered

📏 Mechanical Characteristics

• Connectors:

  • Debugger side: 20-pin 2.54 mm IDC header (ARM standard JTAG) or 20-pin 2mm SWD header (depending on board version)

  • Target side: Multiple pinouts provided — 20-pin ARM JTAG, 10-pin SWD, or 4-pin custom

• Board size: ~25–35 mm wide × 40–50 mm long (varies by model)

• Mounting: Inline connection, no mounting holes (compact design)

🔧 Features

• Converts between 20-pin ARM JTAG to 10-pin SWD

• Breaks out GND, 3.3 V, 5 V, SWDIO, SWCLK, NRST, and SWO signals

• Some versions include level shifters for low-voltage targets (down to 1.8 V)

• Designed for quick connection to development boards and target PCBs

🌡 Environmental Ratings

• Operating temperature: −20 °C to +70 °C (typical)

• Storage temperature: −40 °C to +85 °C

💡 Typical Use Case

1. Connect your ST-LINK, ULINK, or J-LINK programmer to the adapter.

2. Choose SWD or JTAG mode in your IDE/debugger settings.

3. Attach adapter output to your target MCU’s debug header.