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J-Trace Model Overview

The following table shows the features which are included in each J-Trace model.

Hardware Features

Hardware features like Ethernet interface, USB full- / high-speed interface, etc. are J-Trace model specific features which can not be updated or changed by software updates.

 Feature J-Trace PRO
for Cortex
-M
J-Trace PRO
Cortex
Download speed
into RAM 1
3.0
MByte/sec
3.0
MByte/sec
Max. target interface speed 50 MHz 50 MHz
Max. SWO speed 100 MHz 100 MHz
Supported target voltage 1.2V - 5V 1.2V - 5V
USB

 

 

Ethernet

 

 

JTAG interface

 

 

cJTAG interface

 

 

SWD interface

 

 

SWO interface

 

 

ETM Trace

 

 

ETB Trace

 

 

Unlimited Streaming Trace + Live Analysis 4

 

 

 Supported      

 Optional Model      

 Not Supported

1 The download speeds listed here are the peak download speeds that can be achieved by the particular J-Trace model. The actual download speed may be lower as it depends on various factors, such as, but not limited to: The selected debug interface & speed, the CPU core and its operating frequency, other devices in the JTAG chain in case JTAG is used as target interface.

Unlimited streaming trace allows to transmit trace in real-time to the PC. While traditional trace only allows to see and analyze the last xxx MB of trace data, with streaming trace it is possible to have all data available. This allows extended debugging features like code coverage, CPU load analysis based on a function basis, ...

Software Features

Software features are features implemented in the software primarily on the host. Software features can either come with the J-Trace or be added later using a license string from Segger.

  J-Trace PRO
for Cortex-M
J-Trace PRO
Cortex
GDB Server

 

 

Flash Download 2

 

 

Unlimited Flash Breakpoints 3

 

 

J-Flash

 

 

Ozone

 

 

RDI

 

 

RDDI

 

 

 Supported      

 Optional, an additional license is required

2 Most IDEs come with their 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 (e.g. the GNU Debugger). For more information about flash download, please refer to Flash Download.

3 The Unlimited Flash Breakpoint feature allows setting an unlimited number 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, six for Cortex-M3). For more information about flash breakpoints, please refer to Unlimited Flash Breakpoints.

Supported Cores

Support for additional / new cores may be added to existing J-Trace models with a new firmware version as far as the exisiting J-Trace hardware allows it.

  J-Trace PRO 
for Cortex-M
J-Trace PRO 
Cortex
ARM Cortex cores
Cortex-A5

 

 

 

Cortex-A7

 

 

 

Cortex-A8

 

 

 

Cortex-A9

 

 

 

Cortex-A12

 

 

 

Cortex-A15

 

 

 

Cortex-A17

 

 

 

Cortex-M0

 

 

Cortex-M0+

 

 

Cortex-M1

 

 

Cortex-M3

 

 

 

 

Cortex-M4

 

 

 

 

Cortex-M7

 

 

 

 

Cortex-M23

 

 

Cortex-M33

 

 

 

 

Cortex-R4

 

 

 

Cortex-R5

 

 

 

SC000 (M0 secure)

 

 

SC300 (M3 secure)

 

 

 

 

 Debug support: Run control, memory access, etc.      

 Pin Trace Supported

 Not supported