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J-Link » 8.08.00 J-LINK

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J-Link - 8.08.00 J-LINK

JTAG/SWD Emulator with USB interface

J-Link is a USB powered JTAG emulator supporting a large number of CPU cores.

Based on a 32-bit RISC CPU, it can communicate at high speed with the supported target CPUs. J-Link is used around the world in tens of thousand places for development and production (flash programming) purposes.

J-Link support is integrated in most professional IDEs such as IAR, Keil, Rowley, Renesas and many others.

Along with the OEM version (such as IAR J-Link, ATMEL SAM-Ice and others) more than 60,000 J-Links have been sold so far, making the J-Link likely to be the most popular emulator for ARM cores and the de-facto standard.


  • Direct download into flash memory of most popular microcontrollers supported
  • USB 2.0 interface
  • Supported CPUs: Any ARM7,9,11, Cortex-M0, M1, M3, M4, R4, Renesas RX
  • Serial Wire Debug (SWD) support
  • Serial Wire Viewer (SWV) support
  • Automatic core recognition
  • JTAG speed up to 12 MHz
  • Download speed up to 720 Kbytes/second (ARM7 @ 50 MHz, 12MHz JTAG speed)
  • Seamless integration into the IAR Embedded Workbench IDE
  • No power supply required, powered through USB
  • Support for adaptive clocking
  • All JTAG signals can be monitored, target voltage can be measured
  • Support for multiple devices
  • Fully plug and play compatible
  • Standard 20-pin JTAG connector
  • Wide target voltage range: 1.2V - 3.3V, 5V tolerant
  • USB and 20-pin ribbon cable included
  • Memory viewer (J-Mem) included
  • TCP/IP server included, which allows using J-Link via TCP/IP networks
  • RDI interface available, which allows using J-Link with RDI compliant software
  • Flash programming software (J-Flash) available
  • Flash DLL available, which allows using flash functionality in custom applications
  • Software Developer Kit (SDK) available
  • Embedded Trace Buffer (ETB) support
  • 14-pin JTAG adapter available
  • Optical isolation adapter available
  • Target power supply: J-Link can supply up to 300 mA to target with overload protection