Model Comparison - Segger J-Link User Manual

1.3.1

Model comparison

The following tables show the features which are included in each J-Link / J-Trace
model.
Hardware features
USB
Ethernet
Supported cores
JTAG
SWD
SWO
ETM Trace
Software features
Software features are features implemented in the software primarily on the host.
Software features can either come with the J-Link or be added later using a license
string from Segger.
J-Flash
Flash breakpoints
Flash download
GDB Server
RDI
1
Most IDEs come with its own flashloaders, so in most cases this feature is not
essential for debugging your applications in flash. The J-Link flash download
(FlashDL) feature is mainly used in debug environments where the debugger does
not come with an own flashloader (for example, the GNU Debugger). For more infor-
mation about how flash download via FlashDL works, please refer to Flash download
and flash breakpoints on page 143.
2
In order to use the flash breakpoints with J-Link no additional license for flash
download is required. The flash breakpoint feature allows setting an unlimited num-
ber of breakpoints even if the application program is not located in RAM, but in flash
memory. Without this feature, the number of breakpoints which can be set in flash is
limited to the number of hardware breakpoints (typically two for ARM 7/9, up to six
for Cortex-M)
download and flash breakpoints on page 143.
J-Link / J-Trace (UM08001)
J-Link
yes
no
ARM7/9/11,
Cortex-A5/A8,
Cortex-M0/M1/
M3/M4, Cor-
tex-R4
yes
yes
yes
no
J-Link
yes(opt)
2
yes(opt)
1
yes(opt)
yes(opt)
yes(opt)
For more information about flash breakpoints, please refer to Flash
J-Link Pro
for Cortex-M
yes yes
yes no
ARM 7/9 (no
ARM7/9/11,
tracing), Cor-
Cortex-M0/M1/
tex-M0/M1/
M3
M3/M4
yes yes
yes yes
yes yes
no yes
J-Link Pro
for Cortex-M
yes yes(opt)
yes yes(opt)
yes yes(opt)
yes yes(opt)
yes yes(opt)
© 2004-2011 SEGGER Microcontroller GmbH & Co. KG
J-Trace
J-Trace
yes
no
ARM 7/9
yes
no
no
yes
J-Trace
J-Trace
yes(opt)
yes(opt)
yes(opt)
yes(opt)
yes(opt)
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