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 is supported by all major IDEs such as IAR EWARM, Keil MDK, Rowley CrossWorks, Atollic TrueSTUDIO, IAR EWRX, Renesas HEW, Renesas e2studio, and many others.
Including all models, more than 100,000 J-Links have been sold so far, making J-Link probably the most popular emulator for ARM cores and the de-facto standard.
Direct download into flash memoryof most popular microcontrollers supported
Supported CPUs: Any ARM7/9/11, Cortex-A5/A8/A9, Cortex-M0/M1/M3/M4, Cortex-R4, RX100/RX200/RX610/RX621/RX62N/RX62T/RX630/RX631/RX63N
Download speed up to 1 MByte/second
Supportsunlimited breakpointsin flash memory!1More info...
Setting breakpoints inexternalflash memory of Cortex-M systems is possible with
J-Link'sUnlimited Flash Breakpointstechnology only!
Supported by all major IDEsMore info...
Supports concurrent access to CPU by multiple applications3
Crossplatform support (runs on Windows, Linux, Mac OS X)4
Intelligence in the emulator firmwareMore info...
Remote Server included. Allows using J-Link remotely via TCP/IPMore info...
GDBServer includedMore info...
Production flash programming software (J-Flash) availableMore info...
Software Developer Kit (SDK) availableMore info...
Supports multiple target interfaces: JTAG, SWD
Supports SWV/SWO (Serial Wire Viewer / Serial wire output)
Wide target voltage range: 1.2V - 3.3V, 5V tolerant
Supports JTAG chains with multiple devices
Embedded Trace Buffer (ETB) support
Various target adapters available, including optical isolation adapter.
RDI interface DLL available.More info...
Fully plug and play compatible
No power supply required, powered through USB
Support for adaptive clocking
All JTAG signals can be monitored, target voltage can be measured
Target power supply: J-Link can supply up to 300 mA to target with overload protection