The SEGGER J-Link BASE is an industry-standard JTAG/SWD debugger and programmer for ARM-based microcontrollers. It connects via USB and provides hardware debugging, flash programming, and real-time memory access across a wide range of ARM cores — from Cortex-M0 to Cortex-A9.

The J-Link is toolchain, IDE, and vendor neutral, working with GDB Server (Linux, macOS, Windows), Keil, IAR, Atmel Studio, and other major development environments. Flash programming algorithms for most MCUs are included and regularly updated by SEGGER.

Key Features

• JTAG & SWD – Supports both debug interfaces
• Wide ARM Support – ARM7/9/11, Cortex-M0/M0+/M1/M3/M4, Cortex-A5/A8/A9, Cortex-R4
• USB High-Speed – Fast programming and debugging (not FTDI-based)
• IDE & OS Neutral – Works with Keil, IAR, Atmel Studio, GDB, and more
• Cross-Platform – GDB Server available for Linux, macOS, and Windows
• Flash Programming – Built-in algorithms for most ARM MCUs
• Commercial Licence – Approved for commercial and production use

Specifications

• Interface: JTAG / SWD
• Connection: USB
• Supported Cores: ARM7/9/11, Cortex-M, Cortex-A, Cortex-R
• Connector: 20-pin standard JTAG/SWD

Ideal For

• Professional embedded firmware development
• Commercial ARM product development
• Production flash programming
• Hardware debugging with breakpoints and memory inspection

Package Contents

• 1× SEGGER J-Link BASE Debugger

Resources

• J-Link Product Page (SEGGER)