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SEGGER Trace Probe J-Trace product family

J-Trace Model Overview

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

  1. 1.Hardware Features
  2. 2.Software Features
  3. 3.Supported Cores

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.

FeatureJ-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 speed50 MHz50 MHz
Max. SWO speed100 MHz100 MHz
Supported target voltage1.2V - 5V1.2V - 5V
USB

Ethernet

JTAG interface

cJTAG interface

SWD interface

SWO interface

ETM Trace

ETB Trace

Unlimited Streaming Trace + Live Analysis 4

Supported

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.

4 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

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